Accession Number : AD0700346

Title :   ONE-DIMENSIONAL NONEQUILIBRIUM AIRFLOW,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Stulov,V. P. ; Shkadova,V. P.

Report Date : 01 OCT 1969

Pagination or Media Count : 14

Abstract : The problem of a steady, quasi-one-dimensional airflow in a current tube is solved using the inverse problem approach, taking nonequilibrium chemical and ionization reactions as well as the nonequilibrium excitation of vibrational degrees of freedom of molecular components into consideration. The application of an implicit scheme for approximating the fundamental equations made it possible to carry out computations over the whole range of nonequilibrium, i.e., from frozen to equilibrium state. Properties of nonequilibrium flow, as well as variations in temperature, vibrational energies, and concentrations of components along the current tube, are discussed. A numerical analysis of the transition to equilibrium flow past a sphere, with increasing sphere radius shows that the absence of equilibrium at a given pressure substantially affects the distribution of thermodynamic parameters and air composition, but affects the velocity to a much lesser degree. (Author)

Descriptors :   (*ONE DIMENSIONAL FLOW, *NONEQUILIBRIUM FLOW), FROZEN EQUILIBRIUM FLOW, IONIZATION, VIBRATION, NUMERICAL ANALYSIS, SPHERES, THERMODYNAMICS, AIR, USSR

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE