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- Title
Recalibration of LBM Populations for Construction of Grid Refinement with No Interpolation.
- Authors
Berezin, Arseniy; Perepelkina, Anastasia; Ivanov, Anton; Levchenko, Vadim
- Abstract
Grid refinement is used to reduce computing costs while maintaining the precision of fluid simulation. In the lattice Boltzmann method (LBM), grid refinement often uses interpolated values. Here, we developed a method in which interpolation in space and time is not required. For this purpose, we used the moment matching condition and rescaled the nonequilibrium part of the populations, thereby developing a recalibration procedure that allows for the transfer of information between different LBM stencils in the simulation domain. Then, we built a nonuniform lattice that uses stencils with different shapes on the transition. The resulting procedure was verified by performing benchmarks with the 2D Poisselle flow and the advected vortex. It is suggested that grids with adaptive geometry can be built with the proposed method.
- Subjects
LATTICE Boltzmann methods; INTERPOLATION spaces; INTERPOLATION; KNOWLEDGE transfer
- Publication
Fluids, 2023, Vol 8, Issue 6, p179
- ISSN
2311-5521
- Publication type
Article
- DOI
10.3390/fluids8060179