A theoretical method was proposed to extend a bridge density functional approximation ( bdfa ) for the non - uniform hard sphere fluid to the non - uniform lennard - jones ( lj ) fluid 摘要为了将非匀一硬球流体的桥密度泛函近似扩展到非匀一非硬球流体，提出了一个理论方案。
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Then we apply the approach of direct particle simulation ( dps ) to the simulation of soft sphere model and hard sphere model by innovatively combining the different method of dealing the particle collision algorithm of hard and soft sphere model . we also calculate the different cases with the two approaches 接着运用颗粒相直接模拟思想，大胆地鞣和了国内外学者关于软颗粒、硬颗粒模型对颗粒碰撞计算的不同方法，分别用软、硬颗粒模型计算了不同的例子。
