Lattice Boltzmann equation for axisymmetric thermal flows |
| |
Authors: | Lin Zheng Chuguang Zheng |
| |
Affiliation: | National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China |
| |
Abstract: | A simple lattice Boltzmann equation (LBE) model for axisymmetric thermal flow is proposed in this paper. The flow field is solved by a quasi-two-dimensional nine-speed (D2Q9) LBE, while the temperature field is solved by another four-speed (D2Q4) LBE. The model is validated by a thermal flow in a pipe and some nontrivial thermal buoyancy-driven flows in vertical cylinders, including Rayleigh-Bénard convection, natural convection, and heat transfer of swirling flows. It is found that the numerical results agree excellently with analytical solution or other numerical results. |
| |
Keywords: | Lattice Boltzmann equation Axisymmetric thermal flow Buoyancy-driven flow |
本文献已被 ScienceDirect 等数据库收录! |
|