Flexible and efficient discretizations of multilayer models with variable density

José Garres-Díaz and Luca Bonaventura

Applied Mathematics and Computation, 2021, vol. 402, issue C

Abstract: We show that the semi-implicit time discretization approaches previously introduced for multilayer shallow water models for the barotropic case can be also applied to the variable density case with Boussinesq approximation. Furthermore, also for the variable density equations, a variable number of layers can be used, so as to achieve greater flexibility and efficiency of the resulting multilayer approach. An analysis of the linearized system, which allows to derive linear stability parameters in simple configurations, and the resulting spatially semi-discretized equations are presented. A number of numerical experiments demonstrate the effectiveness of the proposed approach.

Keywords: Semi-implicit method; Multilayer approach; Depth-averaged model; Mass exchange; Stratified flow (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:402:y:2021:i:c:s0096300321001454

DOI: 10.1016/j.amc.2021.126097

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