论文部分内容阅读
介绍了适用于多种流场数值模拟的无滑动格子Boltzmann平衡分布边界条件,这一边界条件是以Bounce-Back方法为基础并满足质量、动量守恒的准则.数值计算结果表明平衡分布边界条件克服了Bounce-Back方法在边界上所产生的滑动速度误差效应.利用平衡分布边界条件数值模拟了由棱柱形充填粒子构成的微尺度渗流流场中的Darcy-Forchheimer方程,通过与Lee和Yang的数值结果比较,该预测结果是足够可靠的.
The boundary conditions for the Boltzmann equilibrium distribution of non-slip lattices, which are suitable for numerical simulations of a variety of flow fields, are introduced. The boundary conditions are based on the Bounce-Back method and satisfy the mass and momentum conservation criteria. Numerical results show that the equilibrium distribution boundary conditions are overcome The sliding speed error effect on the boundary of Bounce-Back method is obtained.The Darcy-Forchheimer equation of micro-scale seepage flow field composed of prismatic filled particles is numerically simulated by the equilibrium distribution boundary conditions, The result of the comparison is reliable enough.