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- W2989859968 abstract "This work presents a new lattice Boltzmann model for steady and unsteady two-dimensional shallow water flows. Compared to previous lattice Boltzmann based shallow water models, the proposed method uses a consistent characteristic speed in the pressure term and in the viscosity. To preserve the isotropy of viscosity, the relaxation rates for the different cumulants have to be decoupled. This is only possible by using multiple relaxation rates. The recovery of the correct viscosity is investigated by a convergence study based on the decay of a Taylor Green Vortex. Results from shallow water models using the proposed collision operator are then compared to those derived from standard BGK approach and from a continuous model." @default.
- W2989859968 created "2019-12-05" @default.
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- W2989859968 date "2020-01-01" @default.
- W2989859968 modified "2023-09-25" @default.
- W2989859968 title "A new collision operator for lattice Boltzmann shallow water model: a convergence and stability study" @default.
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- W2989859968 doi "https://doi.org/10.1016/j.advwatres.2019.103474" @default.
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