Physical Review E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Thermal lattice Boltzmann (TLBE) models that utilize the single relaxation time scalar Bhatnagar, Gross, and Krook collision operator have an invariant Prandtl number. For flows with arbitrary Prandtl number, a matrix collision operator is introduced. The relaxation parameters are generalized so that the transport coefficients become density independent. TLBE simulations are presented for two-dimensional free decaying turbulence induced by a strongly perturbed double velocity shear layer for various Prandtl numbers.
Original Publication Citation
Soe, M., Vahala, G., Pavlo, P., Vahala, L., & Hudong, C. (1998). Thermal lattice Boltzmann simulations of variable Prandtl number turbulent flows. Physical Review E, 57(4), 4227-4237. doi: 10.1103/PhysRevE.57.4227
Soe, Min; Vahala, George; Pavlo, Pavol; Vahala, Linda L.; and Chen, Hudong, "Thermal Lattice Boltzmann Simulations of Variable Prandtl Number Turbulent Flows" (1998). Electrical & Computer Engineering Faculty Publications. 53.