Validation for equation of state in wide regime:Copper as prototype  

作　　者：Haifeng Liu Haifeng Song Qili Zhang Gongmu Zhang Yanhong Zhao 

机构地区：[1]Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China

出　　处：《Matter and Radiation at Extremes》2016年第2期123-131,共9页极端条件下的物质与辐射（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.10804011,11176002).

摘　　要：In this paper we introduce the wide regime equation of state(WEOS)developed in Institute of Applied Physics and Computational Mathematics(IAPCM).A semi-empirical model of the WEOS is given by a thermodynamically complete potential of the Helmholtz free energy which combines several theoretical models and has some adjustable parameters calibrated via some experimental and theoretical data.The validation methods of the equation of state in wide regime are presented using copper as a prototype.The results of the WEOS are well consistent with the available theoretical and experimental data,including ab initio cold curve under compression,isotherm,Hugoniot,off-Hugoniot and sound velocity data.It enhances our confidence in the accuracy of the WEOS,which is very important for the validation and verification of equation of state in high temperature and pressure technology.

关 键 词：VALIDATION Wide-range equation of state COPPER Ab initio cold curve Room-temperature isotherm HUGONIOT Velocity of sound 

分 类 号：O17[理学—数学]