MODIFIED IDEAL-GAS RELATIONS FOR THE DESCRIPTION OF REAL STEAM OBLIQUE SHOCK-WAVES

Using the best available equations for the thermodynamic properties of H2O and the oblique shock wave relations which hold in general, the a ccurate solution for the oblique shock in real steam is obtained, for numerous stagnation states. The accurate results are approximated by e xplicit empirical relations which have mathematical forms similar to t hose of the ideal gas oblique shock, but with new coefficients and exp onents such as to describe the real steam with a very good approximati on. [1] The numerous values of these new parameters are illustrated in diagrams with respect to the stagnation temperature and the stagnatio n density as a parameter.