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Zbl 0919.76068
He, Xiaoyi; Chen, Shiyi; Doolen, Gary D.
A novel thermal model for the lattice Boltzmann method in incompressible limit. (English)
[J] J. Comput. Phys. 146, No. 1, 282-300 (1998). ISSN 0021-9991

Summary: A novel lattice Boltzmann thermal model is proposed for studying thermohydrodynamics in incompressible limit. The new model introduces an internal energy density distribution function to simulate the temperature field. The macroscopic density and velocity fields are still simulated using the density distribution function. Compared with the multispeed thermal lattice Boltzmann models, the current scheme is numerically more stable. In addition, the new model can incorporate viscous heat dissipation and compression work done by the pressure, in contrast to the passive-scalar-based thermal lattice Boltzmann models. Numerical simulations of Couette flow with a temperature gradient and Rayleigh-Bénard convection agree well with analytical solutions and benchmark data.

MSC 2000:: *76M28 Particle methods and lattice-gas methods
76A02 Foundations of fluid mechanics
80A20 Heat and mass transfer
82B20 Lattice systems
82-08 Computational methods (statistical mechanics)

Keywords: internal energy density distribution function; density distribution function; viscous heat dissipation; compression work; Couette flow; Rayleigh-Bénard convection

Cited in: Zbl 1203.76129 Zbl 1177.76321

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