TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
T1  - Flächenhafte Flutwellenausbreitung und anschließende Flutung unterirdischer Bauwerke
T2  - Fünf Jahre nach der Flut : Hochwasserschutzkonzepte - Planung, Berechnung, Realisierung = Five years after the flood : concepts of flood protection - design, evaluation, realisation ; Dresdner Wasserbaukolloquium 2007, 08. - 09. Oktober 2007 /  [Hrsg. von H.-B. Horlacher ...] (Dresdner Wasserbauliche Mitteilungen ; H. 35)
Y1  - 2007
SN  - 978-3-86005-571-7
SP  - 475
EP  - 484
PB  - Techn. Univ.
CY  - Dresden
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Hildebrandt, Arndt
A1  - Oertel, Mario
A1  - Schlenkhoff, Andreas
A1  - Schlurmann, Torsten
ED  - McKee Smith, Jane
T1  - Bore propagation over a submerged horizontal plate by physical and numerical simulation
T2  - Coastal engineering 2008 : proceedings of the 31st international conference; Hamburg, Germany, 31 August - 5 September 2008 ; Vol. 4
Y1  - 2008
SN  - 9814277401 ; 9789814277402
SP  - 3542
EP  - 3553
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
ED  - Pagliara, Stefano
T1  - Optimization of the reaeration potential on embankment stepped spillways in skimming flow regime
T2  - Hydraulic structures : proceedings of the second International Junior Researcher and Engineer Workshop on Hydraulic Structures, Pisa, Italy, 30 July-1 August 2008
Y1  - 2008
SN  - 978-88-8492-568-8
SP  - 97
EP  - 106
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
ED  - Theobald, S.
T1  - Optimierung des potentiellen Sauerstoffeintrags auf Treppenschussrinnen mit gemäßigter Neigung
T2  - 9. JuWi-Treffen : Beiträge zum Treffen junger Wissenschaftlerinnen und junger Wissenschaftler deutschsprachiger Wasserbauinstitute
Y1  - 2009
SP  - 73
EP  - 78
PB  - Universität Kassel
CY  - Kassel
ER  - 
TY  - THES
A1  - Bung, Daniel B.
T1  - Zur selbstbelüfteten Gerinneströmung auf Kaskaden mit gemäßigter Neigung. (Bericht / Fachbereich Bautechnik, Lehr- und Forschungsgebiet Wasserbau und Wasserwirtschaft, Bergische Universität Gesamthochschule Wuppertal ; Bd. 16)
Y1  - 2009
SN  - 978-3-8322-8382-7
N1  - Zugl.: Wuppertal, Univ., Diss., 2009
PB  - Shaker
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
A1  - Oertel, M.
T1  - Self-aerated skimming flow on embankment stepped spillways
T2  - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada
Y1  - 2009
SN  - 9789078046080
SP  - 1 CD-ROM
ER  - 
TY  - CHAP
A1  - Oertel, M.
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
T1  - Flash flood awareness and prevention
T2  - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada
Y1  - 2009
SN  - 9789078046080
SP  - 1 CD-ROM
ER  - 
TY  - CHAP
A1  - Schlenkhoff, Andreas
A1  - Bung, Daniel B.
T1  - Prediction of oxygen transfer in self-aerated skimming flow on embankment stepped spillways
T2  - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada
Y1  - 2009
SN  - 9789078046080
SP  - 1 CD-ROM
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Oertel, M.
A1  - Schlenkhoff, A.
A1  - Schlurmann, Torsten
ED  - Obrusnik, Ivan
T1  - Flash flood awareness and prevention in Germany
T2  - Early warning for flash floods : international workshop, Praha 2011 : workshop proceedings
Y1  - 2010
SN  - 978-80-86690-91-9
SP  - 34
EP  - 40
ER  - 
TY  - CHAP
A1  - Heinz, G.
A1  - Oertel, Mario
A1  - Bung, Daniel B.
ED  - Janssen, Robert
T1  - Investigations on a cooling water system for a gas tubine facility concerning air vortexes and sediment transport
T2  - Hydraulic structures: useful water harvesting systems or relics? : Third International Junior Researcher and Engineer Workshop on Hydraulic Structures (IJREWHS'10) : Edinburgh, Scotland, U.K., 2-3 May 2010
Y1  - 2010
SN  - 9781742720159
SP  - 109
EP  - 116
PB  - School of Civil Engineering, The University of Queensland
CY  - Brisbane
ER  - 
TY  - CHAP
A1  - Kerpen, N. B.
A1  - Bung, Daniel B.
A1  - Schlurmann, Torsten
ED  - Janssen, Robert
T1  - Physical model investigations of ships passing through a lock
T2  - Hydraulic structures: useful water harvesting systems or relics? : Third International Junior Researcher and Engineer Workshop on Hydraulic Structures (IJREWHS'10) : Edinburgh, Scotland, U.K., 2-3 May 2010
Y1  - 2010
SN  - 9781742720159
SP  - 93
EP  - 100
PB  - School of Civil Engineeering, The University of Queensland
CY  - Brisbane
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
T1  - Self-aerated skimming flow on embankment stepped spillways : the effect of additional micro-roughness on energy dissipation and oxygen transfer
T2  - Proceedings from first IAHR European congress : May 2010, Edinburgh
Y1  - 2010
SN  - 9780956595102
SP  - Artikelkennnummer HSIIId
PB  - Heriot-Watt University, School of the Built Environment
CY  - Edinburgh
ER  - 
TY  - CHAP
A1  - Kerpen, N. B.
A1  - Bung, Daniel B.
A1  - Schlurmann, Torsten
T1  - Physical model investigations of pressure distributions next to ships passing through a lock
T2  - 5th Chinese-German Joint Symposium on Hydraulic and Ocean Engineering : CG JOINT 2010
Y1  - 2010
SN  - 978-7-5618-3671-2
SP  - 514
EP  - 519
PB  - Univ. Press
CY  - Tianjin
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
T1  - A comparative study of self-aerated stepped spillway and smooth invert chute flow: the effect of step-induced macro roughness
T2  - 5th Chinese-German Joint Symposium on Hydraulic and Ocean Engineering : CG JOINT 2010
Y1  - 2010
SN  - 978-7-5618-3671-2
SP  - 451
EP  - 456
PB  - Univ. Press
CY  - Tianjin
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
T1  - Selbstbelüftete Gerinneströmungen auf Treppenschussrinnen
T2  - Talsperren im Wandel : 15. Deutsches Talsperrensymposium ; Beiträge zur Tagung am 14. bis 16. April 2010 im Eurogress Aachen
Y1  - 2010
SN  - 978-3-8322-9043-6
SP  - 39
EP  - 47
ER  - 
TY  - JOUR
A1  - Bung, Daniel B.
T1  - Developing flow in skimming flow regime on embankment stepped spillways
JF  - Journal of hydraulic research
Y1  - 2011
SN  - 1814-2079 (E-Journal); 0022-1686 (Print)
VL  - Vol. 49
IS  - Iss. 5
SP  - 639
EP  - 648
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
T1  - Non-intrusive measuring of air-water flow properties in self-aerated stepped spillway flow
T2  - Balance and uncertainty - water in a changing world :  proceedings of the 34th IAHR world congress ; 33rd Hydrology and Water Resources Symposium ; 10th Conference on Hydraulics in Water Engineering ; 26 June - 1 July 2011, Brisbane, Australia
Y1  - 2011
SN  - 978-0-85825-868-6
SP  - 2380
EP  - 2387
ER  - 
TY  - CHAP
A1  - Ahmed, H.
A1  - Schlenkhoff, A.
A1  - Bung, Daniel B.
T1  - Hydrodynamic characteristics of vertical slotted wall breakwaters
T2  - Balance and uncertainty - water in a changing world :  proceedings of the 34th IAHR world congress ; 33rd Hydrology and Water Resources Symposium ; 10th Conference on Hydraulics in Water Engineering ; 26 June - 1 July 2011, Brisbane, Australia
Y1  - 2011
SN  - 978-0-85825-868-6
SP  - 1179
EP  - 1186
ER  - 
TY  - JOUR
A1  - Bung, Daniel B.
T1  - Fließcharakteristik und Sauerstoffeintrag bei selbstbelüfteten Gerinneströmungen auf Kaskaden mit gemäßigter Neigung
JF  - Österreichische Wasser- und Abfallwirtschaft
Y1  - 2011
SN  - 1613-7566 (E-Journal); 0945-358X (Print)
VL  - Vol. 63
IS  - Iss. 3-4
SP  - 76
EP  - 81
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Kerpen, N.
A1  - Verworn, F.
A1  - Bung, Daniel B.
A1  - Daemrich, K.-F.
A1  - Schlurmann, Torsten
T1  - Ermittlung von Wellenüberlaufmengen an Sturmflutschutzwänden auf Deichen
T2  - Maritimer Wasserbau und Küsteningenieurwesen : 8. FZK-Kolloquium : Hannover 10. März, 2011
Y1  - 2011
SN  - 1610-5249
SP  - 63
EP  - 68
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
A1  - Schlenkhoff, Andreas
ED  - Carstensen, Dirk
T1  - Blocksteinrampen in Riegelbauweise : Neue Bemessungsansätze
T2  - Staubauwerke : planen, bauen, betreiben; 35. Dresdner Wasserbaukolloquium 2012, 08. - 09. März 2012
Y1  - 2012
SN  - 978-3-86780-261-1
SP  - 317
EP  - 326
PB  - Selbstverl. der Techn. Univ.
CY  - Dresden
ER  - 
TY  - JOUR
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Initial stage of two-dimensional dam-break waves: laboratory versus VOF
JF  - Journal of hydraulic research
N2  - 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.
KW  - VOF
KW  - PIV
KW  - physical model
KW  - numerical model
KW  - drag force
KW  - dam-break
Y1  - 2012
U6  - http://dx.doi.org/10.1080/00221686.2011.639981
SN  - 1814-2079 (E-Journal); 0022-1686 (Print)
VL  - 50
IS  - 1
SP  - 89
EP  - 97
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Sun, Q.
A1  - Meireles, I.
A1  - Matos, J.
A1  - Viseu, T.
T1  - USBR type III stilling basin performance for steep stepped spillways
T2  - Hydraulic structures into the 21st century : 4th IAHR International Symposium on Hydraulic Structures : 9.-11.2.2012, Porto
Y1  - 2012
SN  - 978-989-8509-01-7
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Characteristics of cross-bar block ramp flows
T2  - Hydraulic structures into the 21st century : 4th IAHR International Symposium on Hydraulic Structures : 9.-11.2.2012, Porto
Y1  - 2012
SN  - 978-989-8509-01-7
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
T1  - Sensitivity of phase detection techniques in aerated chute flows to hydraulic design parameters
T2  - 2nd European IAHR congress : 27. - 29. June 2012, München
Y1  - 2012
SN  - 978-3-943683-03-5
SP  - Artikelkennnummer: B15
PB  - Lehrstuhl u. Versuchsanst. für Wasserbau u. Wasserwirtschaft d. TU München
CY  - München
ER  - 
TY  - CHAP
A1  - Schlurmann, Torsten
A1  - Bung, Daniel B.
T1  - Experimental investigation of flow-induced radial gate vibrations at Lower Subansiri dam
T2  - Sixth Chinese-German Joint Symposium on Hydraulic and Ocean Engineering : JOINT 2012 : 23.-29.9.2012, Keelung
Y1  - 2012
SP  - 7
EP  - 14
ER  - 
TY  - JOUR
A1  - Bung, Daniel B.
T1  - Non-intrusive detection of air–water surface roughness in self-aerated chute flows
JF  - Journal of hydraulic research
Y1  - 2013
SN  - 1814-2079 (E-Journal); 0022-1686 (Print)
VL  - Vol. 51
IS  - Iss. 3
SP  - 322
EP  - 329
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Pagliara, S.
T1  - Proceedings of the International Workshop on Hydraulic Design of Low-Head Structures : Aachen, Germany, February, 20-22, 2013 /  D. Bung ; S. Pagliara (eds.)
Y1  - 2013
SN  - 978-3-939230-04-5
PB  - Bundesanst. für Wasserbau
CY  - Karlsruhe
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Comparison of 2D dam-break waves with VOF and SPH method
T2  - Proceedings of the 35th IAHR world congress : 8.-13.9.2013, Chengdu, China
Y1  - 2013
SP  - Artikelkennnummer: A11113
PB  - Tsinghua Univ. Press
CY  - Beijing
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
T1  - Air-water surface roughness in self-aerated stepped spillway flows
T2  - 35th IAHR world congress : 8.-13.9.2013, Chengdu, China
Y1  - 2013
SP  - Artikelkennnummer: A11045
PB  - Tsinghua Univ. Press
CY  - Beijing
ER  - 
TY  - CHAP
A1  - Gogolin, C.
A1  - Carvalho, R.
A1  - Bung, Daniel B.
A1  - Matos, J.
T1  - Experimental and numerical investigation of steady and unsteady flows in roughened channels with cross beams
T2  - 35th IAHR world congress : 8.-13.9.2013, Chengdu, China
Y1  - 2013
SP  - Artikelkennnummer: A10837C
PB  - Tsinghua Univ. Press
CY  - Beijing
ER  - 
TY  - JOUR
A1  - Leandro, J.
A1  - Bung, Daniel B.
A1  - Carvalho, R.
T1  - Measuring void fraction and velocity fields of a stepped spillway for skimming flow using non-intrusive methods
JF  - Experiments in fluids
Y1  - 2014
U6  - http://dx.doi.org/10.1007/s00348-014-1732-6
SN  - 0723-4864 (Print) ; 1432-1114 (Online)
IS  - 55
SP  - Art. 1732
PB  - Springer Nature
CY  - Heidelberg
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Oertel, Mario
T1  - Manipulation of non-aerated cavity flow on a stepped spillway model
T2  - 3rd European IAHR Congress : April 14 – 16, 2014, Porto
Y1  - 2014
PB  - Univ. of Porto
CY  - Porto
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Numerische Strömungssimulation von Fließgewässern - Wo stehen wir und was werden wir im Laufe der nächsten Jahre erreichen?
T2  - Simulationsverfahren und Modelle für Wasserbau und Wasserwirtschaft = Simulation techniques and models for hydraulic engineering and water management / 37. Dresdner Wasserbaukolloquium 2014, 13. - 14. März 2014. (Dresdner wasserbauliche Mitteilungen ; H. 50)
Y1  - 2014
SN  - 978-3-86780-349-6
SP  - 19
EP  - 30
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
T1  - Observations on non-aerated flow and air entrainment on moderately sloped stepped spillways
T2  - 7th Chinese-German Joint Symposium on Hydraulic and Ocean Engineering : 8. - 12. Sept. 2014, Hannover
Y1  - 2014
N1  - Kennwortgeschützter Zugang. Passwort bei Prof. Bung, Fachbereich Bauingenieurwesen
SP  - 1
EP  - 8
ER  - 
TY  - CHAP
A1  - Chanson, Hubert
A1  - Bung, Daniel B.
A1  - Matos, J.
T1  - Stepped spillways and cascades
T2  - Energy dissipation in hydraulic structures / Hubert Chanson (ed.)
Y1  - 2015
SN  - 978-1-138-02755-8 (print) ; 978-1-315-68029-3 (e-Book)
SP  - 45
EP  - 64
PB  - CRC Press
CY  - Boca Raton, Fla. [u.a.]
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
ED  - Rowinski, Pawel
T1  - Laboratory models of free-surface flows
T2  - Rivers - physical, fluvial and environmental processes
N2  - Hydraulic modeling is the classical approach to investigate and describe complex fluid motion. Many empirical formulas in the literature used for the hydraulic design of river training measures and structures have been developed using experimental data from the laboratory. Although computer capacities have increased to a high level which allows to run complex numerical simulations on standard workstation nowadays, non-standard design of structures may still raise the need to perform physical model investigations. These investigations deliver insight into details of flow patterns and the effect of varying boundary conditions. Data from hydraulic model tests may be used for calibration of numerical models as well. As the field of hydraulic modeling is very complex, this chapter intends to give a short overview on capacities and limits of hydraulic modeling in regard to river flows and hydraulic structures only. The reader shall get a first idea of modeling principles and basic considerations. More detailed information can be found in the references.
KW  - Physical modeling
KW  - Similitude
KW  - Open channels
KW  - Hydraulic structures
Y1  - 2015
SN  - 978-3-319-17718-2 ; 978-3-319-17719-9
U6  - http://dx.doi.org/10.1007/978-3-319-17719-9_9
SP  - 213
EP  - 228
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Valero, Daniel
A1  - Bung, Daniel B.
T1  - Hybrid investigation of air transport processes in moderately sloped stepped spillway flows
T2  - E-proceedings of the 36th IAHR World Congress 28 June – 3 July, 2015, The Hague, the Netherlands
Y1  - 2015
SP  - 1
EP  - 10
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Balmes, Jan P.
A1  - Bung, Daniel B.
T1  - Numerical simulation of erosion processes on crossbar block ramps
T2  - E-proceedings of the 36th IAHR World Congress 28 June – 3 July, 2015, The Hague, the Netherlands
Y1  - 2015
SP  - 1
EP  - 8
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Valero, Daniel
T1  - Image processing for bubble image velocimetry in self-aerated flows
T2  - E-proceedings of the 36th IAHR World Congress 28 June – 3 July, 2015, The Hague, the Netherlands
Y1  - 2015
SP  - 1
EP  - 8
ER  - 
TY  - JOUR
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Numerische Strömungssimulationen von Fließgewässern : Praxisanwendungen und zukünftige Entwicklungen
JF  - Korrespondenz Wasserwirtschaft : KW
Y1  - 2015
SN  - 1616-430X
VL  - 8
IS  - H. 3
SP  - 177
EP  - 182
PB  - Gesellschaft zur Förderung der Abwassertechnik
CY  - Hennef
ER  - 
TY  - CHAP
A1  - Bühler, P.
A1  - Leandro, J.
A1  - Bung, Daniel B.
A1  - Lopes, P.
A1  - Carvalho, R.
T1  - Measuring void fraction of a stepped spillway with non-intrusive methods using different image resolutions
T2  - 2nd International Workshop on Hydraulic Structures : Data Validation : Coimbra, Portugal, 8-9 May 2015
Y1  - 2015
SP  - 1
EP  - 8
ER  - 
TY  - CHAP
A1  - Lopes, Pedro
A1  - Bung, Daniel B.
A1  - Leandro, Jorge
A1  - Carvalho, Rita F.
T1  - The effect of cross-waves in physical stepped spillway models
T2  - E-proceedings of the 36th IAHR World Congress ; 28 June - 3 July, 2015, The Hague, the Netherlands
Y1  - 2015
SP  - 1
EP  - 9
ER  - 
TY  - JOUR
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Stability and scour development of bed material on crossbar block ramps
JF  - International journal of sediment research
N2  - 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.
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.ijsrc.2014.12.003
SN  - 1001-6279
VL  - 30
IS  - 4
SP  - 344
EP  - 350
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Valero, Daniel
A1  - Bung, Daniel B.
A1  - Crookston, B. M.
A1  - Matos, J.
ED  - Crookston, B.
ED  - Tullis, B.
T1  - Numerical investigation of USBR type III stilling basin performance downstream of smooth and stepped spillways
BT  - Session 1: Hydraulic structures
T2  - Hydraulic Structures and Water System Management. 6th IAHR International Symposium on Hydraulic Structures, Portland, OR, 27-30 June 2016
Y1  - 2016
SN  - 978-1-884575-75-4
U6  - http://dx.doi.org/10.15142/T340628160853
SP  - 635
EP  - 646
ER  - 
TY  - CHAP
A1  - Bung, Daniel B.
A1  - Valero, Daniel
ED  - Crookston, B.
ED  - Tullis, B.
T1  - Application of the optical flow method to velocity determination in hydraulic structure models
BT  - Session 11: Fish passage and shiplocks
T2  - Hydraulic Structures and Water System Management. 6th IAHR International Symposium on Hydraulic Structures, Portland, OR, 27-30 June 2016
Y1  - 2016
SN  - 978-1-884575-75-4
U6  - http://dx.doi.org/10.15142/T3150628160853
SP  - 223
EP  - 232
ER  - 
TY  - CHAP
A1  - Oertel, M.
A1  - Bung, Daniel B.
ED  - Crookston, B.
ED  - Tullis, B.
T1  - Scouring processes downstream a crossbar block ramp
BT  - Session 3: Scour, erosion, sedimentation
T2  - Hydraulic Structures and Water System Management. 6th IAHR International Symposium on Hydraulic Structures, Portland, OR, 27-30 June 2016
Y1  - 2016
SN  - 978-1-884575-75-4
U6  - http://dx.doi.org/10.15142/T3340628160853
SP  - 549
EP  - 559
ER  - 
TY  - JOUR
A1  - Valero, Daniel
A1  - Bung, Daniel B.
T1  - Sensitivity of turbulent Schmidt number and turbulence model to simulations of jets in crossflow
JF  - Environmental Modelling and Software
N2  - 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.
Y1  - 2016
U6  - http://dx.doi.org/10.1016/j.envsoft.2016.04.030
SN  - 1364-8152 (electronic)
VL  - 82
SP  - 218
EP  - 228
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Valero, Daniel
A1  - Bung, Daniel B.
T1  - 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
JF  - International Journal of Multiphase Flow
N2  - 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.
Y1  - 2016
U6  - http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.04.012
SN  - 0301-9322
VL  - 84
SP  - 66
EP  - 74
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Kerpen, Nils B.
A1  - Bung, Daniel B.
A1  - Valero, Daniel
A1  - Schlurmann, Torsten
T1  - Energy dissipation within the wave run-up at stepped revetments
T2  - 8th Chinese-German Joint Symposium on Hydraulic and Ocean Engineering, Qingdao, China
KW  - energy disspation
KW  - wave run-up
KW  - friction
Y1  - 2016
ER  -