【摘要】 采用13速六方格子BhatnagarGrossKrook模型研究热流体力学.在根据Fourier热导定律确定局域平衡分布函数的系数时,可引入参数k,使热导系数λ=(2ρ+9k)(τ-12),切粘滞系数与热导系数之比的Prandtl数不再局限于常数1/2,从而扩大了模型的应用范围该模型可用于高雷诺数的热流体的模拟.更多还原

【Abstract】 A 13\|speed lattice Bhatnagar\|Gross\|Krook model on hexagonal lattice is used to investigate thermohydrodynamics.An adjustable parameter k is introduced in the process to determine the parameter in local equilibrium distribution function according to Fourier law.As a result,the thermal conductivity is λ=(2ρ +9k)(τ-0 5) ,so that the Prandtl number becomes tunable and Reynolds number can be raised effectively.更多还原