Wide-range equation of state for water and steam: Method of construction

A wide-range equation of state for water and steam in analytical form is developed. The equation is valid for moderate and high pressures up to $4 \times 10^{12}$ Pa, in particular, explosive and static compression in a wide range of densities. An equation is derived which enables one to calculate the Grueneisen coefficient dependent on specific volume and temperature. A method is suggested which enables one to use the experimental data for the dependences of heat capacity and of isochoric coefficient of temperature pressure increase on specific volume and temperature for calculating the Grueneisen coefficient and internal heat energy.