Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2011-07-17
Physics
Condensed Matter
Statistical Mechanics
Submitted to Phys. Rev. E, 11-MAR-2011; revised
Scientific paper
A generalization of the lattice Bhatnagar-Gross-Krook (LBGK) model for the simulation of hydrodynamics is presented, which takes into account the difference and the frame-independence of the relaxation of non-hydrodynamic modes. The present model retains the computationally efficient standard LBGK form with the generalized equilibrium explicitly derived. The two-dimensional realization on the standard lattice is discussed in detail. Performance of the model is assessed through a shear layer simulation and enhanced stability and accuracy with respect to the standard LBGK are reported. The results demonstrate that the present model is a useful upgrade of the standard LBGK without compromising its computational efficiency and accuracy.
Karlin Iliya V.
Luo Kai-Hong
Lycett-Brown D.
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