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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : A well-balanced scheme for shallow water euqations over irregular bed topography including flooded a...
A well-balanced scheme for shallow water euqations over irregular bed topography including flooded and partial flooded cells
Author : Feng-peng Bai(1), Zhong-hua Yang(2)
ABSTRACT
This study develops a new well-balanced scheme for the one dimensional shallow water flow over irregular bed topography
with wet/dry fronts, in a finite volume of Godunov-type framework. A new reconstruction technique is proposed including
flooded cells and partial flooded cells which preserves non-negative of water depth values. For the wet cell, a modified
RSGM (Revised Surface Gradient Method) is presented assuming that the bed topography is irregular in the cell. If the cell
is partial flooded, this paper gives a special reconstruction technique of flow variables which has an assumption that the
bottom function is linear in it. The HLL approximate Riemann solver is applied to evaluate the flux at cell faces. The
numerical results show better agreements with analytical solutions of a set of test cases and experiment results.
File Size : 573,538 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 14/08/2015
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