An accurate numerical solution to the Saint-Venant-Hirano model for mixed-sediment morphodynamics in rivers
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- 作者：Guglielmo Stecca ; a ; b ; c ; Gu.Stecca@niwa.co.nz" class="auth_mail" title="E-mail the corresponding author ; guglielmo.stecca@unitn.it" class="auth_mail" title="E-mail the corresponding author ; Annunziato Sivigliad ; siviglia@vaw.baug.ethz.ch" class="auth_mail" title="E-mail the corresponding author ; Astrid Blome ; Astrid.Blom@tudelft.nl" class="auth_mail" title="E-mail the corresponding author
- 关键词：Non-conservative hyperbolic systems ; Mixed sediment ; Numerical morphodynamics ; Active layer ; Path-conservative method ; Upwind methods
- 刊名：Advances in Water Resources
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：93
- 期：part_PA
- 页码：39-61
- 全文大小：2544 K
文摘
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We present a new coupled numerical solution to the Saint-Venant-Hirano model.
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We develop a concept of balancedness for the vertical sediment mass fluxes.
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We propose a fully-mathematical benchmark based on linearised wave dynamics.
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We model streamwise and vertical sorting by comparison with laboratory data.
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Our accurate solution allows us to identify strengths and weaknesses in the model.