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  - Valero, Daniel
A1  - Kramer, Matthias
A1  - Bung, Daniel B.
A1  - Chanson, Hubert
T1  - A stochastic bubble generator for air-water flow research
T2  - E-proceedings of the 38th IAHR World Congress, September 1-6, 2019, Panama City, Panama
Y1  - 2019
U6  - http://dx.doi.org/10.3850/38WC092019-0909
SP  - 5714
EP  - 5721
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  - JOUR
A1  - Lopes, Pedro
A1  - Leandro, Jorge
A1  - Carvalho, Rita F.
A1  - Bung, Daniel B.
T1  - Alternating skimming flow over a stepped spillway
JF  - Environmental Fluid Mechanics
Y1  - 2017
U6  - http://dx.doi.org/10.1007/s10652-016-9484-x
SN  - 1573-1510
VL  - 17
IS  - 2
SP  - 303
EP  - 322
PB  - Springer
CY  - Berlin
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  - JOUR
A1  - Valero, Daniel
A1  - Bung, Daniel B.
T1  - Artificial Neural Networks and pattern recognition for air-water flow velocity estimation using a single-tip optical fibre probe
JF  - Journal of Hydro-environment Research
Y1  - 2017
U6  - http://dx.doi.org/10.1016/j.jher.2017.08.004
SN  - 1570-6443
VL  - 19
IS  - 3
SP  - 150
EP  - 159
PB  - Elsevier
CY  - Amsterdam
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  - 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  - JOUR
A1  - Valero, D.
A1  - Bung, Daniel B.
A1  - Crookston, B. M.
T1  - Closure to “Energy Dissipation of a Type III Basin under Design and Adverse Conditions for Stepped and Smooth Spillways”
JF  - Journal of Hydraulic Engineering
Y1  - 2019
U6  - http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0001669
VL  - 146
IS  - 2
PB  - ASCE
CY  - Reston, Va.
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  - 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  - 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  - JOUR
A1  - Valero, Daniel
A1  - Bung, Daniel B.
A1  - Crookston, B.M.
T1  - Energy dissipation of a Type III basin under design and adverse conditions for stepped and smooth spillways
JF  - Journal of Hydraulic Engineering
N2  - 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.
Y1  - 2018
U6  - http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0001482
SN  - 0733-9429
N1  - Article number 04018036
VL  - 144
IS  - 7
PB  - ASCE
CY  - Reston, Va.
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  - 
TY  - JOUR
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
JF  - Journal of Ocean University of China
Y1  - 2017
U6  - http://dx.doi.org/10.1007/s11802-017-3355-z
SN  - 1993-5021
VL  - 16
IS  - 4
SP  - 649
EP  - 654
PB  - Springer
CY  - Berlin
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  - 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  - 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  - 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  - Bung, Daniel B.
A1  - Valero, Daniel
T1  - FlowCV - An open-source toolbox for computer vision applications in turbulent flows
T2  - Proceedings of the 37th IAHR World Congress August 13 – 18, 2017, Kuala Lumpur, Malaysia
Y1  - 2017
SN  - 2521-716X
SP  - 5356
EP  - 5365
ER  -