Matter and Radiation at Extremes, 2016, 1 (2): 123, Published Online: May. 9, 2017
Validation for equation of state in wide regime: Copper as prototype
Validation Validation Wide-range equation of state Wide-range equation of state Copper Copper Ab initio cold curve Ab initio cold curve Room-temperature isotherm Room-temperature isotherm Hugoniot Hugoniot Velocity of sound Velocity of sound
Abstract
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.
Haifeng Liu, Haifeng Song, Qili Zhang, Gongmu Zhang, Yanhong Zhao. Validation for equation of state in wide regime: Copper as prototype[J]. Matter and Radiation at Extremes, 2016, 1(2): 123.