TY  - THES
A1  - Mainz, Stefan
T1  - Zur Berechnung der Tragfähigkeit von dünnwandigen Koppelpfetten aus Kaltprofilen für Biegung um die schwache Achse und Torsion
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:1373-opus-3798
CY  - Hamburg
ER  - 
TY  - JOUR
A1  - Höttges, Jörg
T1  - QKan - Management of drainage system data with QGIS
JF  - Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings
Y1  - 2017
VL  - 17
IS  - Article 13
SP  - 95
EP  - 100
ER  - 
TY  - JOUR
A1  - Bung, Daniel Bernhard
A1  - Valero, Daniel
T1  - Re-aeration on stepped spillways with special consideration of entrained and entrapped air
JF  - Geosciences
N2  - 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.
Y1  - 2018
SN  - 2076-3263
VL  - 8
IS  - 9
SP  - Article number 333
PB  - MDPI
CY  - Basel
ER  - 
TY  - CHAP
A1  - Bung, Daniel Bernhard
A1  - Valero, Daniel
A1  - Hermens, G.
T1  - Hybrid investigation on the hydraulic performance of a new trapezoidal fishway
T2  - 7th IAHR International Symposium on Hydraulic Structures, ISHS 2018
Y1  - 2018
SN  - 978-069213277-7
U6  - https://doi.org/10.15142/T3S06R
SP  - 184
EP  - 193
ER  - 
TY  - CHAP
A1  - Bung, Daniel Bernhard
A1  - Tullis, Blake
T1  - Hydraulic Structures - ISHS2018 in Perspective
T2  - 7th IAHR International Symposium on Hydraulic Structures, Aachen, Germany, 15-18 May
Y1  - 2018
SN  - 978-0-692-13277-7
U6  - https://doi.org/10.15142/T3WH2B
ER  - 
TY  - CHAP
A1  - Valero, Daniel
A1  - Vogel, Jochen
A1  - Schmidt, Daniel
A1  - Bung, Daniel Bernhard
T1  - Three-dimensional flow structure inside the cavity of a non-aerated stepped chute
T2  - 7th IAHR International Symposium on Hydraulic Structures, Aachen, Germany, 15-18 May
Y1  - 2018
SN  - 978-0-692-13277-7
U6  - https://doi.org/10.15142/T3GH17
ER  - 
TY  - BOOK
A1  - Krause, Thomas
A1  - Ulke, Bernd
T1  - Übungsaufgaben und Berechnungen für den Baubetrieb: Klausurvorbereitung mit ausführlichen Lösungen
Y1  - 2019
U6  - https://doi.org/10.1007/978-3-658-23127-9
N1  - Printausgabe in der Bibliothek Bayernallee unter der Signatur 11 XBS 90(3) vorhanden
PB  - Springer Fachmedien
CY  - Wiesbaden
ET  - 3., überarb. Aufl.
ER  - 
TY  - JOUR
A1  - Reger, Vitali
A1  - Kuhnhenne, Markus
A1  - Hachul, Helmut
A1  - Döring, Bernd
A1  - Blanke, Tobias
A1  - Göttsche, Joachim
T1  - Plusenergiegebäude 2.0 in Stahlleichtbauweise
JF  - Stahlbau
Y1  - 2019
U6  - https://doi.org/10.1002/stab.201900034
SN  - 1437-1049 (E-journal), 0038-9145 (print)
VL  - 88
IS  - 6
SP  - 522
EP  - 528
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Valero, Daniel
A1  - Chanson, Hubert
A1  - Bung, Daniel Bernhard
T1  - Robust estimators for turbulence properties assessment
Y1  - 2019
SP  - 1
EP  - 24
ER  - 
TY  - BOOK
A1  - Krause, Thomas
A1  - Ulke, Bernd
A1  - Martin, Joachim
A1  - Lemke, Jörg
A1  - Sparla, Peter
A1  - Streit, Wilfried
ED  - Krause, Thomas
ED  - Ulke, Bernd
T1  - Übungsaufgaben und Berechnungen für den Baubetrieb: Klausurvorbereitung mit ausführlichen Lösungen
Y1  - 2019
SN  - 978-3-658-23126-2 (Print) 978-3-658-23127-9 (Online)
N1  - Vorangegangen ist Krause, Thomas Beispiele aus der Baubetriebspraxis
gedruckt in der Bereichsbibliothek Bayernallee unter der Signatur 11 XBS 90(3)
PB  - Springer Vieweg
CY  - Wiesbaden
ET  - 3. Auflage
ER  -