Shock-wave computations in channel contractions
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Author / Producer
Date
2001
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
Commonly, depth-averaged Navier-Stokes equations are used for shock-wave computations. The classical approach is limited to regions where the hydrostatic pressure assumption is valid. An extended approach taking into account non-hydrostatic pressure distribution as well as momentum in the third direction improves the simulation of the complex wave pattern. A comparison between measurements, the classical and extended shallow water equations as well as with the fully three-dimensional Navier-Stokes equations is undertaken for computations of supercritical flow in a channel contraction considering Froude numbers 4 and 6. The results show that the limitations of the classical approach increase with the Froude number. The extended shallow water approach and the fully three-dimensional Navier-Stokes equations yield both a good agreement with the measurements.
Permanent link
Publication status
published
External links
Book title
XXIX IAHR Congress Proceedings. Theme D. Hydraulics of Rivers, Water Works and Machinery
Journal / series
Volume
2
Pages / Article No.
881 - 887
Publisher
Tsinghua University Press
Event
29th IAHR Congress
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
CFD; Hyghly supercritical flow computations; Channel-contraction; Shock waves
Organisational unit
03820 - Boes, Robert / Boes, Robert