Accession Number : AD0683157

Title :   THE CALCULATION OF EQUILIBRIUM GAS FLOWS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Molodtsov,V. K.

Report Date : 19 AUG 1968

Pagination or Media Count : 13

Abstract : A new technique for computing the thermodynamic properties of gas mixtures is described which is necessary for calculating supersonic equilibrium gas flows over bodies. It is based on differential correlations obtained from the basic equations of gas dynamics and equations of chemical equilibrium. This approach was used for calculating supersonic equilibrium gas flows past blunt bodies by the method of integral relations developed by A. A. Dorodnitsyn and O. M. Belotserkovsky. One of the advantages of this technique consists in that the obtained system of differential equations is associated with the initial approximate system of the numerical scheme for solving the gas dynamic problem and integrated together with the latter by the same method. This procedure requires less computer time than the iteration method. Supersonic flows of air over a sphere were calculated in the range of M = 4 to 30, rho = 0.01 atm, T = 300K as an illustrative example. A comparison of the results with those obtained by the iteration method shows satisfactory agreement. (Author)

Descriptors :   (*SUPERSONIC FLOW, *THERMODYNAMICS), MIXTURES, CHEMICAL EQUILIBRIUM, BLUNT BODIES, DIFFERENTIAL EQUATIONS, CORRELATION TECHNIQUES, DISSOCIATION, USSR

Subject Categories : Aerodynamics
      Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE