A conservative finite volume scheme with time-accurate local time stepping for scalar transport on unstructured grids
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- 作者：José ; Rafael Cavalcantia ; rafaelcavalcantii@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Michael Dumbser ; b ; michael.dumbser@unitn.it" class="auth_mail" title="E-mail the corresponding author ; michael.dumbser@iag.uni-stuttgart.de" class="auth_mail" title="E-mail the corresponding author ; David da Motta-Marquesa ; Carlos Ruberto Fragoso Juniorc
- 关键词：Fully asynchronous time-accurate local time stepping (LTS) ; High resolution finite volume schemes ; Scalar transport ; Semi-implicit schemes for free surface hydrodynamics ; Unstructured mesh ; Lake Guaiba
- 刊名：Advances in Water Resources
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：86
- 期：part_PA
- 页码：217-230
- 全文大小：2744 K
文摘
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New, efficient conservative TVD finite volume scheme for scalar transport.
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Fully asynchronous time-accurate local time stepping.
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Element-local CFL stability condition.
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Small elements do no longer restrict the time step of large elements.
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CPU time reduction of up to one order of magnitude for water quality simulations.
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Coupling of the scalar transport model with a semi-implicit model for hydrodynamics.
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Well suited for the study of river–lake systems or river–ocean interfaces.