@article{BungValero2018,
  author    = {Bung, Daniel B. and Valero, Daniel},
  title     = {Re-aeration on stepped spillways with special consideration of entrained and entrapped air},
  series = {Geosciences},
  volume    = {8},
  journal   = {Geosciences},
  number    = {9},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2076-3263},
  pages     = {Article number 333},
  year      = {2018},
  abstract  = {As with most high-velocity free-surface flows, stepped spillway flows become self-aerated when the drop height exceeds a critical value. Due to the step-induced macro-roughness, the flow field becomes more turbulent than on a similar smooth-invert chute. For this reason, cascades are oftentimes used as re-aeration structures in wastewater treatment. However, for stepped spillways as flood release structures downstream of deoxygenated reservoirs, gas transfer is also of crucial significance to meet ecological requirements. Prediction of mass transfer velocities becomes challenging, as the flow regime differs from typical previously studied flow conditions. In this paper, detailed air-water flow measurements are conducted on stepped spillway models with different geometry, with the aim to estimate the specific air-water interface. Re-aeration performances are determined by applying the absorption method. In contrast to earlier studies, the aerated water body is considered a continuous mixture up to a level where 75\% air concentration is reached. Above this level, a homogenous surface wave field is considered, which is found to significantly affect the total air-water interface available for mass transfer. Geometrical characteristics of these surface waves are obtained from high-speed camera investigations. The results show that both the mean air concentration and the mean flow velocity have influence on the mass transfer. Finally, an empirical relationship for the mass transfer on stepped spillway models is proposed.},
  language  = {en}
}
@article{KerresSiekmann2017,
  author    = {Kerres, Karsten and Siekmann, Marko},
  title     = {Wie kommuniziere ich prognosegest{\"u}tzte Instandhaltungsstrategien erfolgreich in politischen Entscheidungsgremien?},
  series = {3 R. Fachzeitschrift f{\"u}r sichere und effiziente Rohleitungssysteme},
  journal   = {3 R. Fachzeitschrift f{\"u}r sichere und effiziente Rohleitungssysteme},
  number    = {12},
  publisher = {Vulkan-Verl.},
  address   = {Essen},
  issn      = {2191-9798},
  pages     = {47 -- 51},
  year      = {2017},
  language  = {de}
}
@article{ValeroBungCrookston2018,
  author    = {Valero, Daniel and Bung, Daniel B. and Crookston, B.M.},
  title     = {Energy dissipation of a Type III basin under design and adverse conditions for stepped and smooth spillways},
  series = {Journal of Hydraulic Engineering},
  volume    = {144},
  journal   = {Journal of Hydraulic Engineering},
  number    = {7},
  publisher = {ASCE},
  address   = {Reston, Va.},
  issn      = {0733-9429},
  doi       = {10.1061/(ASCE)HY.1943-7900.0001482},
  year      = {2018},
  abstract  = {New information regarding the influence of a stepped chute on the hydraulic performance of the United States Bureau of Reclamation (Reclamation) Type III hydraulic jump stilling basin is presented for design (steady) and adverse (decreasing tailwater) conditions. Using published experimental data and computational fluid dynamics (CFD) models, this paper presents a detailed comparison between smooth-chute and stepped-chute configurations for chute slopes of 0.8H:1V and 4H:1V and Froude numbers (F) ranging from 3.1 to 9.5 for a Type III basin designed for F = 8. For both stepped and smooth chutes, the relative role of each basin element was quantified, up to the most hydraulic extreme case of jump sweep-out. It was found that, relative to a smooth chute, the turbulence generated by a stepped chute causes a higher maximum velocity decay within the stilling basin, which represents an enhancement of the Type III basin's performance but also a change in the relative role of the basin elements. Results provide insight into the ability of the CFD models [unsteady Reynolds-averaged Navier-Stokes (RANS) equations with renormalization group (RNG) k-ϵ turbulence model and volume-of-fluid (VOF) for free surface tracking] to predict the transient basin flow structure and velocity profiles. Type III basins can perform adequately with a stepped chute despite the effects steps have on the relative role of each basin element. It is concluded that the classic Type III basin design, based upon methodology by reclamation specific to smooth chutes, can be hydraulically improved for the case of stepped chutes for design and adverse flow conditions using the information presented herein.},
  language  = {en}
}
@article{ValeroBung2018,
  author    = {Valero, Daniel and Bung, Daniel B.},
  title     = {Vectrino profiler spatial filtering for shear flows based on the mean velocity gradient equation},
  series = {Journal of Hydraulic Engineering},
  volume    = {144},
  journal   = {Journal of Hydraulic Engineering},
  number    = {7},
  publisher = {ASCE},
  address   = {Reston, Va.},
  issn      = {0733-9429},
  doi       = {10.1061/(ASCE)HY.1943-7900.0001485},
  year      = {2018},
  abstract  = {A new methodology is proposed to spatially filter acoustic Doppler velocimetry data from a Vectrino profiler based on the differential mean velocity equation. Lower and upper bounds are formulated in terms of physically based flow constraints. Practical implementation is discussed, and its application is tested against data gathered from an open-channel flow over a stepped macroroughness surface. The method has proven to detect outliers occurring all over the distance range sampled by the Vectrino profiler and has shown to remain applicable out of the region of validity of the velocity gradient equation. Finally, a statistical analysis suggests that physically obtained bounds are asymptotically representative.},
  language  = {en}
}
@article{ZhangValeroBungetal.2018,
  author    = {Zhang, G. and Valero, Daniel and Bung, Daniel B. and Chanson, H.},
  title     = {On the estimation of free-surface turbulence using ultrasonic sensors},
  series = {Flow Measurement and Instrumentation},
  volume    = {60},
  journal   = {Flow Measurement and Instrumentation},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0955-5986},
  doi       = {10.1016/j.flowmeasinst.2018.02.009},
  pages     = {171 -- 184},
  year      = {2018},
  abstract  = {Accurate determination of free-surface dynamics has attracted much research attention during the past decade and has important applications in many environmental and water related areas. In this study, the free-surface dynamics in several turbulent flows commonly found in nature were investigated using a synchronised setup consisting of an ultrasonic sensor and a high-speed video camera. Basic sensor capabilities were examined in dry conditions to allow for a better characterisation of the present sensor model. The ultrasonic sensor was found to adequately reproduce free-surface dynamics up to the second order, especially in two-dimensional scenarios with the most energetic modes in the low frequency range. The sensor frequency response was satisfactory in the sub-20 Hz band, and its signal quality may be further improved by low-pass filtering prior to digitisation. The application of the USS to characterise entrapped air in high-velocity flows is also discussed.},
  language  = {en}
}
@article{KerpenBungValeroetal.2017,
  author    = {Kerpen, Nils B. and Bung, Daniel B. and Valero, Daniel and Schlurmann, Torsten},
  title     = {Energy dissipation within the wave run-up at stepped revetments},
  series = {Journal of Ocean University of China},
  volume    = {16},
  journal   = {Journal of Ocean University of China},
  number    = {4},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1993-5021},
  doi       = {10.1007/s11802-017-3355-z},
  pages     = {649 -- 654},
  year      = {2017},
  language  = {en}
}
@article{ValeroBung2017,
  author    = {Valero, Daniel and Bung, Daniel B.},
  title     = {Artificial Neural Networks and pattern recognition for air-water flow velocity estimation using a single-tip optical fibre probe},
  series = {Journal of Hydro-environment Research},
  volume    = {19},
  journal   = {Journal of Hydro-environment Research},
  number    = {3},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1570-6443},
  doi       = {10.1016/j.jher.2017.08.004},
  pages     = {150 -- 159},
  year      = {2017},
  language  = {en}
}
@article{ValeroBung2018,
  author    = {Valero, Daniel and Bung, Daniel B.},
  title     = {Reformulating self-aeration in hydraulic structures: Turbulent growth of free surface perturbations leading to air entrainment},
  series = {International Journal of Multiphase Flow},
  volume    = {100},
  journal   = {International Journal of Multiphase Flow},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0301-9322},
  doi       = {10.1016/j.ijmultiphaseflow.2017.12.011},
  pages     = {127 -- 142},
  year      = {2018},
  abstract  = {A new formulation for the prediction of free surface dynamics related to the turbulence occurring nearby is proposed. This formulation, altogether with a breakup criterion, can be used to compute the inception of self-aeration in high velocity flows like those occurring in hydraulic structures. Assuming a simple perturbation geometry, a kinematic and a non-linear momentum-based dynamic equation are formulated and forces acting on a control volume are approximated. Limiting steepness is proposed as an adequate breakup criterion. Role of the velocity fluctuations normal to the free surface is shown to be the main turbulence quantity related to self-aeration and the role of the scales contained in the turbulence spectrum are depicted. Surface tension force is integrated accounting for large displacements by using differential geometry for the curvature estimation. Gravity and pressure effects are also contemplated in the proposed formulation. The obtained equations can be numerically integrated for each wavelength, hence resulting in different growth rates and allowing computation of the free surface roughness wavelength distribution. Application to a prototype scale spillway (at the Aviemore dam) revealed that most unstable wavelength was close to the Taylor lengthscale. Amplitude distributions have been also obtained observing different scaling for perturbations stabilized by gravity or surface tension. The proposed theoretical framework represents a new conceptualization of self-aeration which explains the characteristic rough surface at the non-aerated region as well as other previous experimental observations which remained unresolved for several decades.},
  language  = {en}
}
@article{LaumannMainzKrahwinkel2017,
  author    = {Laumann, J{\"o}rg and Mainz, Stefan and Krahwinkel, Manuel},
  title     = {Traglastuntersuchungen an Koppelpfetten bei Biegung um die schwache Achse und Torsion},
  series = {Stahlbau},
  volume    = {86},
  journal   = {Stahlbau},
  number    = {11},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {0038-9145},
  doi       = {10.1002/stab.201710544},
  pages     = {1005 -- 1016},
  year      = {2017},
  language  = {de}
}
@article{MoorkampPetersonUibel2016,
  author    = {Moorkamp, Wilfried and Peterson, Leif Arne and Uibel, Thomas},
  title     = {Mit guten Aussichten. Bericht {\"u}ber den Studiengang Holzingenieurwesen an der FH Aachen},
  series = {Bauen mit Holz},
  journal   = {Bauen mit Holz},
  number    = {5},
  publisher = {Rudolf M{\"u}ller},
  address   = {K{\"o}ln},
  issn      = {0005-6545},
  pages     = {33 -- 36},
  year      = {2016},
  language  = {de}
}
@article{Uibel2016,
  author    = {Uibel, Thomas},
  title     = {Untersuchungen zum Spaltverhalten von Holzschrauben. Teil 1},
  series = {Bauen mit Holz},
  journal   = {Bauen mit Holz},
  number    = {10},
  publisher = {Rudolf M{\"u}ller},
  address   = {K{\"o}ln},
  issn      = {0005-6545},
  pages     = {40 -- 42},
  year      = {2016},
  language  = {de}
}
@article{PetersonRoethUibel2017,
  author    = {Peterson, Leif Arne and R{\"o}th, Thilo and Uibel, Thomas},
  title     = {Einsatz von Holzwerkstoffen in Fahrzeugstrukturen},
  series = {Bauen mit Holz},
  journal   = {Bauen mit Holz},
  number    = {3},
  publisher = {Bruderverlag},
  address   = {K{\"o}ln},
  issn      = {0005-6545},
  pages     = {32 -- 38},
  year      = {2017},
  language  = {de}
}
@article{Hoettges2017,
  author    = {H{\"o}ttges, J{\"o}rg},
  title     = {QKan - Management of drainage system data with QGIS},
  series = {Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings},
  volume    = {17},
  journal   = {Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings},
  number    = {Article 13},
  pages     = {95 -- 100},
  year      = {2017},
  language  = {en}
}
@article{Hebel2017,
  author    = {Hebel, Christoph},
  title     = {Erfahrungen mit der RIN und aktuelle Weiterentwicklungen},
  series = {Straßenverkehrstechnik: Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik},
  volume    = {61},
  journal   = {Straßenverkehrstechnik: Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik},
  number    = {7},
  publisher = {Kirschbaum-Verlag},
  address   = {Bonn},
  issn      = {0039-2219},
  pages     = {443 -- 448},
  year      = {2017},
  language  = {de}
}
@article{PyschnyDoeringFeldmann2014,
  author    = {Pyschny, D. and D{\"o}ring, Bernd and Feldmann, M.},
  title     = {Ermittlung der thermischen Leistungsf{\"a}higkeit des neuartigen multifunktionalen Verbunddeckensystems InaDeck},
  series = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen},
  volume    = {89},
  journal   = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen},
  number    = {3},
  publisher = {VDI Fachmedien},
  address   = {D{\"u}sseldorf},
  issn      = {0005-6650},
  pages     = {116 -- 124},
  year      = {2014},
  language  = {de}
}
@article{RegerDoeringKuhnhenne2016,
  author    = {Reger, V. and D{\"o}ring, Bernd and Kuhnhenne, M.},
  title     = {Passive und aktive Maßnahmen zur Fl{\"a}chenk{\"u}hlung im Stahl(leicht)bau},
  series = {Bauingenieur},
  volume    = {91},
  journal   = {Bauingenieur},
  number    = {Jul/Aug},
  publisher = {VDI Fachmedien},
  address   = {D{\"u}sseldorf},
  issn      = {0005-6650},
  doi       = {10.37544/0005-6650-2016-07-08-63},
  pages     = {309 -- 316},
  year      = {2016},
  abstract  = {Mit steigenden D{\"a}mmstandards und h{\"o}heren Komfortanforderungen der Nutzer ger{\"a}t die Problematik der sommerlichen {\"U}berhitzung zunehmend in den Fokus. Um die {\"U}berhitzung m{\"o}glichst gering zu halten, sind Maßnahmen und L{\"o}sungen zu entwickeln, die den potenziellen K{\"u}hlbedarf eines Geb{\"a}udes vermeiden sowie reduzieren. Im Rahmen des europ{\"a}ischen Forschungsprojektes BATIMASS wurden Techniken untersucht, die die sommerliche Raumtemperatur ohne zus{\"a}tzliche K{\"u}hlung (passiv) oder aber mit energieeffizienter wasserbasierter Fl{\"a}chenk{\"u}hlung (aktiv) reduzieren und die besonders f{\"u}r Geb{\"a}ude in Stahl(leicht)bauweise geeignet sind. Daf{\"u}r wurde die Methodik der thermisch {\"a}quivalenten Decke weiterentwickelt, um das thermische Verhalten von Profilblechdecken in Geb{\"a}uden f{\"u}r beide L{\"o}sungsans{\"a}tze analysieren zu k{\"o}nnen. Dar{\"u}ber hinaus wurde der Einsatz von Phasenwechselmaterial (PCM) zur Steigerung der Speicherf{\"a}higkeit von leichten Decken mit besonders geringer thermischer Masse in Simulationen sowie im Labor untersucht und bewertet.},
  language  = {de}
}
@article{BungValero2016,
  author    = {Bung, Daniel B. and Valero, Daniel},
  title     = {Optical flow estimation in aerated flows},
  series = {Journal of Hydraulic Research},
  volume    = {54},
  journal   = {Journal of Hydraulic Research},
  number    = {5},
  publisher = {Taylor \& Francis},
  address   = {London},
  doi       = {10.1080/00221686.2016.1173600},
  pages     = {575 -- 580},
  year      = {2016},
  abstract  = {Optical flow estimation is known from Computer Vision where it is used to determine obstacle movements through a sequence of images following an assumption of brightness conservation. This paper presents the first study on application of the optical flow method to aerated stepped spillway flows. For this purpose, the flow is captured with a high-speed camera and illuminated with a synchronized LED light source. The flow velocities, obtained using a basic Horn-Schunck method for estimation of the optical flow coupled with an image pyramid multi-resolution approach for image filtering, compare well with data from intrusive conductivity probe measurements. Application of the Horn-Schunck method yields densely populated flow field data sets with velocity information for every pixel. It is found that the image pyramid approach has the most significant effect on the accuracy compared to other image processing techniques. However, the final results show some dependency on the pixel intensity distribution, with better accuracy found for grey values between 100 and 150.},
  language  = {en}
}
@article{LopesLeandroCarvalhoetal.2017,
  author    = {Lopes, Pedro and Leandro, Jorge and Carvalho, Rita F. and Bung, Daniel B.},
  title     = {Alternating skimming flow over a stepped spillway},
  series = {Environmental Fluid Mechanics},
  volume    = {17},
  journal   = {Environmental Fluid Mechanics},
  number    = {2},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1573-1510},
  doi       = {10.1007/s10652-016-9484-x},
  pages     = {303 -- 322},
  year      = {2017},
  language  = {en}
}
@article{ValeroBung2016,
  author    = {Valero, Daniel and Bung, Daniel B.},
  title     = {Sensitivity of turbulent Schmidt number and turbulence model to simulations of jets in crossflow},
  series = {Environmental Modelling and Software},
  volume    = {82},
  journal   = {Environmental Modelling and Software},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1364-8152 (electronic)},
  doi       = {10.1016/j.envsoft.2016.04.030},
  pages     = {218 -- 228},
  year      = {2016},
  abstract  = {Environmental discharges have been traditionally designed by means of cost-intensive and time-consuming experimental studies. Some extensively validated models based on an integral approach have been often employed for water quality problems, as recommended by USEPA (i.e.: CORMIX). In this study, FLOW-3D is employed for a full 3D RANS modelling of two turbulent jet-to-crossflow cases, including free surface jet impingement. Results are compared to both physical modelling and CORMIX to better assess model performance. Turbulence measurements have been collected for a better understanding of turbulent diffusion's parameter sensitivity. Although both studied models are generally able to reproduce jet trajectory, jet separation downstream of the impingement has been reproduced only by RANS modelling. Additionally, concentrations are better reproduced by FLOW-3D when the proper turbulent Schmidt number is used. This study provides a recommendation on the selection of the turbulence model and the turbulent Schmidt number for future outfall structures design studies.},
  language  = {en}
}
@article{ValeroBung2016,
  author    = {Valero, Daniel and Bung, Daniel B.},
  title     = {Development of the interfacial air layer in the non-aerated region of high-velocity spillway flows: Instabilities growth, entrapped air and influence on the self-aeration onset},
  series = {International Journal of Multiphase Flow},
  volume    = {84},
  journal   = {International Journal of Multiphase Flow},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0301-9322},
  doi       = {10.1016/j.ijmultiphaseflow.2016.04.012},
  pages     = {66 -- 74},
  year      = {2016},
  abstract  = {Self-aeration is traditionally explained by the water turbulent boundary layer outer edge intersection with the free surface. This paper presents a discussion on the commonly accepted hypothesis behind the computation of the critical point of self-aeration in spillway flows and a new formulation is proposed based on the existence of a developing air flow over the free surface. Upstream of the inception point of self-aeration, some surface roughening has been often reported in previous studies which consequently implies some entrapped air transport and air-water flows coupling. Such air flow is proven in this study by presenting measured air velocities and computing the air boundary layer thickness for a 1V:2H smooth chute flow. Additionally, the growth rate of free surface waves has been analysed by means of Ultrasonic Sensors measurements, obtaining also the entrapped air concentration. High-speed camera imaging has been used for qualitative study of the flow perturbations.},
  language  = {en}
}
@article{BayonValeroGarciaBartualetal.2016,
  author    = {Bayon, Arnau and Valero, Daniel and Garcia-Bartual, Rafael and Vall{\´e}s-Mor{\´a}n, Francisco Jos{\´e} and L{\´o}pez-Jim{\´e}nez, P. Amparo},
  title     = {Performance assessment of OpenFOAM and FLOW-3D in the numerical modeling of a low Reynolds number hydraulic jump},
  series = {Environmental Modelling \& Software},
  volume    = {80},
  journal   = {Environmental Modelling \& Software},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {1364-8152},
  doi       = {10.1016/j.envsoft.2016.02.018},
  pages     = {322 -- 335},
  year      = {2016},
  abstract  = {A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach RNG k-ε. A Volume Of Fluid (VOF) method is used to track the air-water interface, consequently aeration is modeled using an Eulerian-Eulerian approach. Structured meshes of cubic elements are used to discretize the channel geometry. The numerical model accuracy is assessed comparing representative hydraulic jump variables (sequent depth ratio, roller length, mean velocity profiles, velocity decay or free surface profile) to experimental data. The model results are also compared to previous studies to broaden the result validation. Both codes reproduced the phenomenon under study concurring with experimental data, although special care must be taken when swirling flows occur. Both models can be used to reproduce the hydraulic performance of energy dissipation structures at low Reynolds numbers.},
  language  = {en}
}
@article{LaumannMainz2012,
  author    = {Laumann, J{\"o}rg and Mainz, Stefan},
  title     = {Direkte Ermittlung der erforderlichen Einspanntiefe von I‑f{\"o}rmigen Stahlquerschnitten in Betonkonstruktionen},
  volume    = {81},
  number    = {11},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1437-1049},
  doi       = {10.1002/stab.201201620},
  pages     = {850 -- 860},
  year      = {2012},
  abstract  = {F{\"u}r die Ermittlung der erforderlichen Einspanntiefe von eingespannten Stahlquerschnitten in Betonkonstruktionen existieren verschiedene Bemessungsmodelle. Diese basieren vorwiegend auf Grundlage nationaler Normen wie z. B. DIN 18800 [1] und DIN 1045 [2], die durch die europ{\"a}ische Normung ersetzt wurden. Aus diesem Grund wird in diesem Aufsatz ein Berechnungsmodell f{\"u}r die erforderliche Einspanntiefe von eingespannten Stahlquerschnitten in Betonkonstruktionen auf Grundlage des Eurocodes vorgestellt. Das Grundger{\"u}st f{\"u}r dieses Berechnungsmodell bildet das Verfahren nach Kindmann und Laumann, welches in [3] behandelt wurde. Gleichzeitig werden neue Formeln zur direkten Ermittlung der Mindesteinspanntiefe vorgestellt. Behandelt werden gewalzte I-Profile f{\"u}r einachsige Biegung um die starke Achse (y-y) mit Drucknormalkraft.},
  language  = {de}
}
@article{EgnerHeydeLaumannetal.2015,
  author    = {Egner, Ralf and Heyde, Stefan and Laumann, J{\"o}rg and Prokop, Ines},
  title     = {Vorschl{\"a}ge f{\"u}r eine anwenderfreundliche und praxistaugliche Novellierung der allgemeinen Bemessungsregeln und Regeln f{\"u}r den Hochbau (EN 1993 Teil 1-1)},
  series = {Stahlbau},
  volume    = {84},
  journal   = {Stahlbau},
  number    = {10},
  publisher = {Ernst \& Sohn},
  address   = {Berlin},
  issn      = {1437-1049},
  doi       = {10.1002/stab.201510321},
  pages     = {811 -- 822},
  year      = {2015},
  language  = {de}
}
@article{OertelBung2015,
  author    = {Oertel, Mario and Bung, Daniel B.},
  title     = {Numerische Str{\"o}mungssimulationen von Fließgew{\"a}ssern : Praxisanwendungen und zuk{\"u}nftige Entwicklungen},
  series = {Korrespondenz Wasserwirtschaft : KW},
  volume    = {8},
  journal   = {Korrespondenz Wasserwirtschaft : KW},
  number    = {H. 3},
  publisher = {Gesellschaft zur F{\"o}rderung der Abwassertechnik},
  address   = {Hennef},
  issn      = {1616-430X},
  pages     = {177 -- 182},
  year      = {2015},
  language  = {de}
}
@article{OertelBung2015,
  author    = {Oertel, Mario and Bung, Daniel B.},
  title     = {Stability and scour development of bed material on crossbar block ramps},
  series = {International journal of sediment research},
  volume    = {30},
  journal   = {International journal of sediment research},
  number    = {4},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1001-6279},
  doi       = {10.1016/j.ijsrc.2014.12.003},
  pages     = {344 -- 350},
  year      = {2015},
  abstract  = {Block ramps are ecologically oriented drop structures with adequate energy dissipation and partially moderate flow velocities. A special case is given with crossbar block ramps, where the upstream and downstream level difference is reduced by a series of basins. To prevent the total structure from failing, the stability of single boulders within the crossbars and the bed material in between must be guaranteed. The present paper addresses the stability of bed material and scour development for various flow regimes. Any bed material erosion may affect the stability of the crossbar boulders, which in turn can result in major damages of the ramp. Therefore new design approaches are developed to choose an appropriate bed material size and to avoid failures of crossbar block ramp structures.},
  language  = {en}
}
@article{DoeringRegerKuhnhenneetal.2015,
  author    = {D{\"o}ring, Bernd and Reger, Vitali and Kuhnhenne, Markus and Feldmann, Markus and Kesti, Jyrki and Lawson, Mark and Botti, Andrea},
  title     = {Steel solutions for enabling zero-energy buildings},
  series = {Steel Construction - Design and Research},
  volume    = {8},
  journal   = {Steel Construction - Design and Research},
  number    = {3},
  publisher = {Ernst \& Sohn},
  address   = {Berlin},
  issn      = {1867-0539},
  doi       = {10.1002/stco.201510029},
  pages     = {194 -- 200},
  year      = {2015},
  language  = {en}
}
@article{KirschKolymbas2005,
  author    = {Kirsch, Ansgar and Kolymbas, Dimitrios},
  title     = {Theoretische Untersuchung zur Ortsbruststabilit{\"a}t},
  series = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  volume    = {Bd. 82},
  journal   = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  number    = {H. 7},
  issn      = {1437-0999 (E-Journal); 0005-6820 (Print); 0932-8351 (Print)},
  doi       = {10.1002/bate.200590151},
  pages     = {449 -- 456},
  year      = {2005},
  language  = {de}
}
@article{GieseKirschZiegler2006,
  author    = {Giese, S. and Kirsch, Ansgar and Ziegler, M.},
  title     = {Numerische Untersuchung von Schervorg{\"a}ngen mit der Diskrete-Partikel-Methode},
  series = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik},
  volume    = {Bd. 81},
  journal   = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik},
  number    = {H. 5},
  issn      = {0005-6650},
  pages     = {232 -- 239},
  year      = {2006},
  language  = {de}
}
@article{KolymbasFellinKirsch2006,
  author    = {Kolymbas, Dimitrios and Fellin, W. and Kirsch, Ansgar},
  title     = {Squeezing due to stress relaxation in foliated rock},
  series = {International journal for numerical and analytical methods in geomechanics},
  volume    = {Vol. 30},
  journal   = {International journal for numerical and analytical methods in geomechanics},
  number    = {Iss. 13},
  issn      = {1096-9853 (E-Journal); 0363-9061 (Print)},
  doi       = {10.1002/nag.530},
  pages     = {1357 -- 1367},
  year      = {2006},
  language  = {en}
}
@article{Kirsch2008,
  author    = {Kirsch, Ansgar},
  title     = {Experimentelle Untersuchung des Ortsbrustversagens seichter Tunnel},
  series = {{\"O}sterreichische Bauwirtschaft},
  journal   = {{\"O}sterreichische Bauwirtschaft},
  number    = {Sondernr.},
  pages     = {6 -- 9},
  year      = {2008},
  language  = {de}
}
@article{KirschPiazzi2009,
  author    = {Kirsch, Ansgar and Piazzi, Lukas},
  title     = {Numerical investigation of the effectiveness of a bored pile wall for the minimisation of settlement resulting from tunnel driving},
  series = {Geomechanics and tunnelling},
  volume    = {Vol. 2},
  journal   = {Geomechanics and tunnelling},
  number    = {Iss. 6},
  issn      = {1865-7362},
  doi       = {10.1002/geot.200900063},
  pages     = {753 -- 765},
  year      = {2009},
  language  = {de}
}
@article{KolymbasKirsch2009,
  author    = {Kolymbas, Dimitrios and Kirsch, Ansgar},
  title     = {Zum Erddruck auf Lawinenschutzgalerien},
  series = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  volume    = {Vol. 86},
  journal   = {Bautechnik : Zeitschrift f{\"u}r den gesamten Ingenieurbau},
  number    = {Iss. 12},
  issn      = {1437-0999 (E-Journal); 0005-6820 (Print); 0932-8351 (Print)},
  doi       = {10.1002/bate.200910075},
  pages     = {774 -- 779},
  year      = {2009},
  language  = {de}
}
@article{Kirsch2010,
  author    = {Kirsch, Ansgar},
  title     = {Experimental investigation of the face stability of shallow tunnels in sand},
  series = {Acta Geotechnica},
  volume    = {5},
  journal   = {Acta Geotechnica},
  number    = {1},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1861-1125},
  doi       = {10.1007/s11440-010-0110-7},
  pages     = {43 -- 62},
  year      = {2010},
  abstract  = {Various models have been proposed for the prediction of the necessary support pressure at the face of a shallow tunnel. To assess their quality, the collapse of a tunnel face was modelled with small-scale model tests at single gravity. The development of the failure mechanism and the support force at the face in dry sand were investigated. The observed displacement patterns show a negligible influence of overburden on the extent and evolution of the failure zone. The latter is significantly influenced, though, by the initial density of the sand: in dense sand a chimney-wedge-type collapse mechanism developed, which propagated towards the soil surface. Initially, loose sand did not show any discrete collapse mechanism. The necessary support force was neither influenced by the overburden nor the initial density. A comparison with quantitative predictions by several theoretical models showed that the measured necessary support pressure is overestimated by most of the models. Those by Vermeer/Ruse and L{\´e}ca/Dormieux showed the best agreement to the measurements.},
  language  = {en}
}
@article{FellinKingKirschetal.2010,
  author    = {Fellin, Wolfgang and King, Julian and Kirsch, Ansgar and Oberguggenberger, Michael},
  title     = {Uncertainty modelling and sensitivity analysis of tunnel face stability},
  series = {Structural safety},
  volume    = {32},
  journal   = {Structural safety},
  number    = {6},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-4730},
  doi       = {10.1016/j.strusafe.2010.06.001},
  pages     = {402 -- 410},
  year      = {2010},
  abstract  = {This paper proposes an approach to the choice and evaluation of engineering models with the aid of a typical application in geotechnics. An important issue in the construction of shallow tunnels, especially in weak ground conditions, is the tunnel face stability. Various theoretical and numerical models for predicting the necessary support pressure have been put forth in the literature. In this paper, we combine laboratory experiments performed at the University of Innsbruck with current methods of uncertainty and sensitivity analysis for assessing adequacy, predictive power and robustness of the models. The major issues are the handling of the twofold uncertainty of test results and of model predictions as well as the decision about what are the influential input parameters.},
  language  = {en}
}
@article{DemnyHebel2014,
  author    = {Demny, Andreas and Hebel, Christoph},
  title     = {Rechnergest{\"u}tzte Ermittlung der Verbindungsfunktionsstufen und der verbindungsbezogenen Angebotsqualit{\"a}t nach den Richtlinien f{\"u}r integrierte Netzgestaltung nach RIN 2008},
  series = {Straßenverkehrstechnik : Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr ; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik},
  volume    = {Jg. 58},
  journal   = {Straßenverkehrstechnik : Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr ; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik},
  number    = {H. 12},
  publisher = {Kirschbaum Verlag},
  address   = {Bonn},
  issn      = {0039-2219},
  pages     = {811 -- 820},
  year      = {2014},
  language  = {de}
}
@article{MeinzingerBagayokoKoch2003,
  author    = {Meinzinger, Michael and Bagayoko, Lamine and Koch, Eckart},
  title     = {Die Lagerung der Lehrter Bahnhofsbr{\"u}cken},
  series = {Bauingenieur},
  volume    = {Bd. 78},
  journal   = {Bauingenieur},
  number    = {H. 2},
  issn      = {1436-4867 (E-Journal); 0005-6650 (Print)},
  pages     = {73 -- 85},
  year      = {2003},
  language  = {de}
}
@article{LeandroBungCarvalho2014,
  author    = {Leandro, J. and Bung, Daniel B. and Carvalho, R.},
  title     = {Measuring void fraction and velocity fields of a stepped spillway for skimming flow using non-intrusive methods},
  series = {Experiments in fluids},
  journal   = {Experiments in fluids},
  number    = {55},
  publisher = {Springer Nature},
  address   = {Heidelberg},
  issn      = {0723-4864 (Print) ; 1432-1114 (Online)},
  doi       = {10.1007/s00348-014-1732-6},
  pages     = {Art. 1732},
  year      = {2014},
  language  = {en}
}
@article{MalechaKlubertHeinenFuchs2014,
  author    = {Malecha, Hartmut and Klubert, J. and Heinen-Fuchs, Sabine},
  title     = {Laserscanning passe? 3-D-Oberfl{\"a}chenmodelle aus Bilddaten und deren messtechnischer Nutzen},
  series = {Wasserwirtschaft},
  volume    = {Jg. 104},
  journal   = {Wasserwirtschaft},
  number    = {Nr. 9},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  issn      = {0043-0978},
  pages     = {32 -- 35},
  year      = {2014},
  language  = {de}
}
@article{Bung2011,
  author    = {Bung, Daniel B.},
  title     = {Fließcharakteristik und Sauerstoffeintrag bei selbstbel{\"u}fteten Gerinnestr{\"o}mungen auf Kaskaden mit gem{\"a}ßigter Neigung},
  series = {{\"O}sterreichische Wasser- und Abfallwirtschaft},
  volume    = {Vol. 63},
  journal   = {{\"O}sterreichische Wasser- und Abfallwirtschaft},
  number    = {Iss. 3-4},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1613-7566 (E-Journal); 0945-358X (Print)},
  pages     = {76 -- 81},
  year      = {2011},
  language  = {de}
}
@article{Bung2011,
  author    = {Bung, Daniel B.},
  title     = {Developing flow in skimming flow regime on embankment stepped spillways},
  series = {Journal of hydraulic research},
  volume    = {Vol. 49},
  journal   = {Journal of hydraulic research},
  number    = {Iss. 5},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1814-2079 (E-Journal); 0022-1686 (Print)},
  pages     = {639 -- 648},
  year      = {2011},
  language  = {en}
}
@article{OertelBung2012,
  author    = {Oertel, Mario and Bung, Daniel B.},
  title     = {Initial stage of two-dimensional dam-break waves: laboratory versus VOF},
  series = {Journal of hydraulic research},
  volume    = {50},
  journal   = {Journal of hydraulic research},
  number    = {1},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1814-2079 (E-Journal); 0022-1686 (Print)},
  doi       = {10.1080/00221686.2011.639981},
  pages     = {89 -- 97},
  year      = {2012},
  abstract  = {Since several decades, dam-break waves have been of main research interest. Mathematical approaches have been developed by analytical, physical and numerical models within the past 120 years. During the past 10 years, the number of research investigations has increased due to improved measurement techniques as well as significantly increased computer memories and performances. In this context, the present research deals with the initial stage of two-dimensional dam-break waves by comparing physical and numerical model results as well as analytical approaches. High-speed images and resulting particle image velocimetry calculations are thereby compared with the numerical volume-of-fluid (VOF) method, included in the commercial code FLOW-3D. Wave profiles and drag forces on placed obstacles are analysed in detail. Generally, a good agreement between the laboratory and VOF results is found.},
  language  = {en}
}
@article{Bung2013,
  author    = {Bung, Daniel B.},
  title     = {Non-intrusive detection of air-water surface roughness in self-aerated chute flows},
  series = {Journal of hydraulic research},
  volume    = {Vol. 51},
  journal   = {Journal of hydraulic research},
  number    = {Iss. 3},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1814-2079 (E-Journal); 0022-1686 (Print)},
  pages     = {322 -- 329},
  year      = {2013},
  language  = {en}
}
@article{KuckDoering1997,
  author    = {Kuck, Herbert and D{\"o}ring, Bernd},
  title     = {Regenerative Energien in Landesbauten : Land NRW unterst{\"u}tzt Einsatz erneuerbarer Energien 1997 mit 15 Mio. DM},
  series = {Die Bauverwaltung mit Bauamt und Gemeindebau},
  volume    = {Bd. 70},
  journal   = {Die Bauverwaltung mit Bauamt und Gemeindebau},
  number    = {H. 8},
  issn      = {0005-6847},
  pages     = {384 -- 386},
  year      = {1997},
  language  = {de}
}
@article{ThielDoering2001,
  author    = {Thiel, Dieter and D{\"o}ring, Bernd},
  title     = {Dezentrale Raumklimatisierung durch die Fassade},
  series = {TAB Technik am Bau},
  volume    = {Bd. 32},
  journal   = {TAB Technik am Bau},
  number    = {H. 3},
  issn      = {0341-2032},
  pages     = {67 -- 76},
  year      = {2001},
  language  = {de}
}
@article{ZillerDoering2004,
  author    = {Ziller, Claudia and D{\"o}ring, Bernd},
  title     = {Doppelfassaden - vom Experimentalmodell zum Massanzug},
  series = {TAB Technik am Bau},
  volume    = {Bd. 35},
  journal   = {TAB Technik am Bau},
  number    = {H. 12},
  issn      = {0341-2032},
  pages     = {58 -- 63},
  year      = {2004},
  language  = {de}
}
@article{DoeringHechlerWeberetal.2004,
  author    = {D{\"o}ring, Bernd and Hechler, O. and Weber, F. and Sedlacek, Gerhard},
  title     = {Thermische Aktivierung von Fertigteildecken},
  series = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik},
  volume    = {Jg. 55},
  journal   = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik},
  number    = {Nr. 5},
  issn      = {1436-5103},
  pages     = {24 -- 35},
  year      = {2004},
  language  = {de}
}
@article{FeldmannDoeringKuhnhenneetal.2008,
  author    = {Feldmann, Markus and D{\"o}ring, Bernd and Kuhnhenne, Markus and Sedlacek, Gerhard},
  title     = {Zum Thema "Nachhaltigkeit" in der Stahlbauindustrie},
  series = {Stahlbau},
  volume    = {Vol. 77},
  journal   = {Stahlbau},
  number    = {Iss. 10},
  issn      = {0038-9145},
  pages     = {713 -- 720},
  year      = {2008},
  language  = {de}
}
@article{DoeringKuhnhenneHellbergetal.2008,
  author    = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Hellberg, Jan and Feldmann, Markus},
  title     = {Aktive und passive Temperierung eines Stahldeckensystems : numerische und messtechnische Untersuchungen. T. 1},
  series = {HLH : L{\"u}ftung, Klima, Heizung, Sanit{\"a}r, Geb{\"a}udetechnik},
  volume    = {Bd. 59},
  journal   = {HLH : L{\"u}ftung, Klima, Heizung, Sanit{\"a}r, Geb{\"a}udetechnik},
  number    = {H. 10},
  issn      = {1436-5103, 0017-9906, 1434-422X, 1436-5103},
  pages     = {54 -- 60},
  year      = {2008},
  language  = {de}
}
@article{DoeringKuhnhenneHellbergetal.2008,
  author    = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Hellberg, Jan and Feldmann, Markus},
  title     = {Aktive und passive Temperierung eines Stahldeckensystems : thermische Bauteilaktivierung : numerische und messtechnische Untersuchungen. T. 2.},
  series = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik},
  volume    = {Bd. 59},
  journal   = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik},
  number    = {H. 11},
  issn      = {1436-5103},
  pages     = {37 -- 41},
  year      = {2008},
  language  = {de}
}
@article{DoeringFeldmannKuhnhenne2009,
  author    = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus},
  title     = {Der Beitrag von Profilblechdecken zur passiven K{\"u}hlung},
  series = {Bauphysik},
  volume    = {Vol. 31},
  journal   = {Bauphysik},
  number    = {Iss. 2},
  publisher = {Wiley},
  address   = {Weinheim},
  isbn      = {1437-0980 (E-Journal); 0171-5445 (Print)},
  pages     = {65 -- 71},
  year      = {2009},
  language  = {de}
}