NUMERICAL EVALUATION OF STEAM NORMAL SHOCK-WAVES

Using the best available relations describing the thermodynamic behavi our of H2O (steam), numerous shock wave states realized on isentropic expansions starting at various initial points, were computed. The resu lts obtained were approximated by explicit relations having mathematic al forms similar to those of the ideal gas shock wave but with differe nt coefficients and exponents such as to describe the real gas steam. The numerous values of these new coefficients and exponents correspond ing to the stagnation points were fitted by appropriate curves and are illustrated in diagrams with respect to the stagnation temperature an d the stagnation density as a parameter.