PROGRAM DESSI FOR "MATCHING" THERMODYNAMIC FUNCTIONS AND SETTING UP SPLINE EQUATIONS OF STATE
G. M. Eliseev, D. S. Kondrat’ev
VANT. Ser.: Mat. Mod. Fiz. Proc 2006. Вып.2. С. 50-57.
Formulae for setting up smoothing hyperbolic splines and bisplines of the third order are presented which are used to smoothly "match” thermodynamic functions of equations of state. Program DESSI for setting up spline equations of state with the help of polynomial splines of different types is outlined. More simplified formula of thermodynamic coordination as compared to classic formula is obtained. Two algorithms of thermodynamically coordinated interpolation of thermodynamic functions of spline equations of state are realized with its help. Three variants of setting up spline equations of state are briefly described. With the help of hyperbolic bisplines matching a “trial” spline equation of state of copper is set up on the basis of thermodynamic function tables calculated by program PLAZMA-4 and equations of state of G. E. Klinishov.
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