【摘要】 依据硬球流体的高阶维里系数性质,结合硬球流体物态方程的最新进展SK方程(Schultz A J,Kofk D A,2014),给出了一个新的硬球流体的物态方程.通过误差分析发现,新方程相对于SK方程,在低密度稳定区和高密度非稳定区对压缩因子的描述的误差明显降低,精度明显提高.与其它高精度的物态方程比较,在低密度稳态区域新方程的精度仅次于KLM方程;在高密度亚稳态区域新方程的精度仅次于TGM方程;在全密度区间内新方程的精度仅次于TGM方程.更多还原

【Abstract】 Combining the properties of high virial coefficients of hard sphere fluids and the recently published SK equation(Schultz A J,Kofke D A,2014),we constructed a new equation state for hard sphere fluids.We found that this new equation is better than the SK equation in both low density stable range and high density unstable range.In low density stable range,the accuracy of this new equation is better than TGM,SK and HY equations;in the high density unstable range,this new equation is better than SK,KLM and HY equations;in the whole density range,this new equation is better than SK,KLM and HY equations.更多还原