Volumetric formulation of lattice Boltzmann models with energy conservation

Details Volumetric formulation of lattice Boltzmann models with energy conservation Volumetric formulation of lattice Boltzmann models with energy conservation

2010-04-28

arxiv.org/abs/1004.5059v1

Physical Review E 82, 046709 (2010)

Physics

Condensed Matter

Soft Condensed Matter

8 figures

Scientific paper

We analyze a volumetric formulation of lattice Boltzmann for compressible thermal fluid flows. The velocity set is chosen with the desired accuracy, based on the Gauss-Hermite quadrature procedure, and tested against controlled problems in bounded and unbounded fluids. The method allows the simulation of thermohydrodyamical problems without the need to preserve the exact space-filling nature of the velocity set, but still ensuring the exact conservation laws for density, momentum and energy. Issues related to boundary condition problems and improvements based on grid refinement are also investigated.

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