混合物物态方程的计算

Calculation of equation of state of material mixture

在采用体积相加原理计算混合物物态方程的基础上,建立了一种物理模型确定混合物温度。根据混合物中各组分温度和压强平衡条件,采用压强-密度迭代方法计算给出混合物物态方程,编制了两种组分的混合物物态方程计算程序。为检验建立的温度模型的合理性及程序的有效性,分析了不同密度、温度状态的氢(H2)和钨(W)组成的混合物状态参量,计算了以下情形及其组合情形的混合物物态方程:H2和W以不同质量比混合;质量比固定,单组分状态不同;温度区间和密度区间不同。研究表明:实际应用中在建立的混合物温度模型基础上确定的混合物物态方程是合理的。

Based on volume sum rule for computing equation of state（EOS） of mixture materials, a physical model is pro- posed to determine mixture temperature. According to equilibrium conditions of component temperatures and pressures, EOS of mixture is calculated using iterations of pressure and density. To verify and validate proposed temperature model, EOS for mix- ture with Hz and W is calculated and analyzed, and it is shown that proposed temperature model is reasonable. Then EOSs for the following cases, （i） various concentration of H2 and W mixture, （ii） variable single component with fixed concentration, （iii） dif- ferent temperature and density range, are presented. These results are useful in research of inertial confined fusion and high veloc- ity collision.