【摘要】 建立了多组份流体、多速度格子Ｂｏｌｔｚｍａｎｎ模型。该模型满足流体质量扩散方程和运动方程。通过正弦波的衰减过程测量了两流体间的扩散系数。对圆形区域内的静止流体在具有均匀来流速度的另外一种流体中的对流扩散问题进行了数值模拟。更多还原

【Abstract】 A multispecies,multispeeds lattice Boltzmann model is presented to study the mass diffusion properties.The diffusion equations are derived by the Chapman Enskog method.The one dimensional simulations for the sinusoidal concentration distributions are compared with the theoretical results,showing good agreement.The numerical simulations for 2 D convection diffusion problems are also presented.更多还原