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Entropy‐satisfying scheme for a hierarchy of dispersive reduced models of free surface flow
Author(s) -
Parisot Martin
Publication year - 2019
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.4766
Subject(s) - dissipation , mathematics , robustness (evolution) , hierarchy , entropy (arrow of time) , theory of computation , mathematical optimization , algorithm , biochemistry , chemistry , physics , quantum mechanics , economics , market economy , gene , thermodynamics
Summary This work is devoted to the numerical resolution in the multidimensional framework of a hierarchy of reduced models of the water wave equations, such as the Serre‐Green‐Naghdi model. A particular attention is paid to the dissipation of mechanical energy at the discrete level, which acts as a stability argument of the scheme, even with source terms such space and time variation of the bathymetry. In addition, the analysis leads to a natural way to deal with dry areas without leakage of energy. To illustrate the accuracy and the robustness of the strategy, several numerical experiments are carried out. In particular, the strategy is capable of treating dry areas without special treatment.