A novel equation of state for hydrocode

Abstract

A novel model equation of state (EOS) for hydrocode is suggested. This model is called the Δ χ-EOS because it depends on two functions of one variable each. The Δ χ-EOS generalizes the classical incomplete EOS like the ideal gas thermal EOS, the van der Waals EOS, and the virial EOS, among others. We demonstrate the incomplete and complete variants of the Δ χ-EOS. We also discuss how to recover the functions Δ and χ from experimental measurements. © 2012 American Institute of Physics.