Accession Number : AD0656337

Title :   RESTRICTED VARIATIONAL PRINCIPLE METHOD FOR THE FREE MOLECULAR MIXING OF PARALLEL STREAMS,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LABS DIV

Personal Author(s) : Ortloff,C. R.

Report Date : JUN 1967

Pagination or Media Count : 20

Abstract : Rosen's restricted variational principle representation of the Boltzmann equation is used to determine the free molecular mixing of two initially parallel gas streams of differing temperature and speed ratio. Mixing is accomplished by means of thermal and convective motions of the gas particles. It is shown that the variational method leads to a rapid calculation scheme for number density and velocity; results of the method compare closely to exact special function solutions of the collisionless Boltzmann equation. (Author)

Descriptors :   (*RAREFIED GAS DYNAMICS, *JET MIXING FLOW), (*HYPERSONIC FLOW, JET MIXING FLOW), PARTIAL DIFFERENTIAL EQUATIONS, GAS FLOW, OPTIMIZATION, DENSITY, VELOCITY

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE