【摘要】 采用 13速六方格子Boltzmann方法研究Couette流和空腔粘性流 ,模拟了在Pr =0 91,Re =10 0 ,5 0 0 0 ,及Pr =0 91,1,1 2 5而Re =30 0 0情况下Couette流流场的速度、温度分布 ,研究了热输运过程 ;同时用该模型模拟了高雷诺数的空腔粘性流流场演化稳定后 ,形成的涡旋的形状及腔内温度分布情况。更多还原

【Abstract】 A 13 speed lattice Boltzmann model is used to investigate Couette flow with a temperature gradient and viscous cavity flow. The Couette flow for Pr=0 91, Re=100,5 000 and Pr=0 91,1,1 25 and Re=3 000, are simulated with the evolution of driven flow, temperature and viscous heat dissipation. And the distributions of vortex and temperature are shown at Re=3 000 the steady flow field for viscous cavity flow. [更多还原