IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Gravity currents interacting with a bottom barrier
Gravity currents interacting with a bottom barrier
angular shape are a good approximation to submerged barriers used to control the sediment depositing
in reservoirs. The interaction between a Boussinesq constant-flux compositional gravity current and a submerged barrier
of triangular shape is studied numerically based on results of 3-D Large Eddy Simulations (LES). The paper discusses
the structure of the two-layer flow during the quasi-steady regime observed starting some time after the current passed
the obstacle and ending some time after the reflected bore at the obstacle reached the submerged part of the rear end
wall upstream of the obstacle. The paper analyzes the changes in the temporal variation of the flux of heavier fluid
advected over the bottom barrier, the speed of the reflected hydraulic jump and its characteristics, the depth of the
reflected flow and that of the current downstream of the obstacle. The mean flow, turbulence structure and the potential
of the current to induce scour over the barrier and downstream of it during the quasi-steady regime are investigated.Form Required :
File Size : 579,122 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 19/08/2015
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