Recalibration of LBM Populations for Construction of Grid Refinement with No Interpolation

Grid refinement is used to reduce computing costs while maintaining the precision of fluid simulation. In lattice Boltzmann method (LBM), grid often uses interpolated values. Here, we developed a in which interpolation space and time not required. For this purpose, moment matching condition rescaled nonequilibrium part populations, thereby developing recalibration procedure that allows for transfer information between different LBM stencils simulation domain. Then, built nonuniform with shapes on transition. The resulting was verified by performing benchmarks 2D Poisselle flow advected vortex. It suggested grids adaptive geometry can be proposed method.