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A modification to the 13-speed lattice Bhatnagar-Gross-Krook model is presented.The single relaxation time τ and the free parameter k are suitably chosen so that the transport coefficients become energy-dependent only and the Prandtl number is tunable.Simulations for various boundary cavities under high Reynold number are presented with the model.
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Keywords:
- lattice Boltzmann method /
- Bhatnagar-Gross-Krook model /
- Prandtl number /
- cavity flow
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