Enhanced lattice Bhatnagar-Gross-Krook method for fluid dynamics simulation
Karlin, Ilya, Lycett-Brown, Daniel and Luo, Kai H. (2011) Enhanced lattice Bhatnagar-Gross-Krook method for fluid dynamics simulation. Physical Review E (Submitted).
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.
|Subjects:||Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
|Date Deposited:||30 Jun 2011 10:26|
|Last Modified:||30 Jun 2011 10:29|
|Contributors:||Karlin, Ilya (Author)
Lycett-Brown, Daniel (Author)
Luo, Kai H. (Author)
|Date:||11 March 2011|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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