INTERPOLATION EQUATION OF STATE IN EVAPORATING REGION

A. T. Sapozhnikov, A. V. Pershina
VANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1984. Вып.2. С. 29-33.

      Computationally-economic interpolation equation of state is proposed for the energy range 0, ~200kj/g and density range ~10^-3, 1,5ρ_ok, where is pressure at S.C. The economy is due to piecewise-analytical representation form of the equation ef state and to using only polinomial and fractionary-rational functions in computational formulas. An approach to select optimal parameters of the equation of state is discussed and their values are given for aluminium, copper, and lead. Thermal characteristics calculated by the equation of state are compared with experimental data shock compression, thermal expansion, and evaporation.