An inverse computational code for turbulent swirling boundary layer flow
Abstract
Mathematical and computational aspects of a general numerical inverse solution procedure, in the form of a general computer program applicable to weakly swirling turbulent flows, are described. The method requires as input data only flow field distributions of experimental timemean values and from these deduces distributions of significant turbulent stress and exchange coefficient components, thus providing knowledge about turbulence quantities which would otherwise have to be measured by more sophisticated techniques. Sufficient detail for prospective users is given, together with accuracy checks. The technique is applied to both inert and chemicallyreacting swirl flows, and calculations show that previous assumptions of isotropy of the turbulent stress and viscosity components and constancy of PrandtlSchmidt numbers are not generally valid. The exchange coefficients are shown to be functions of the degree of swirl and position in the flowfield; the turbulent viscosity is found to be nonisotropic.
 Publication:

Computers and Fluids
 Pub Date:
 March 1976
 Bibcode:
 1976CF......4...45L
 Keywords:

 Computer Programs;
 Flow Distribution;
 Swirling;
 Turbulent Boundary Layer;
 Chemical Reactions;
 Flow Theory;
 Isotropic Turbulence;
 Prandtl Number;
 Schmidt Number;
 Viscous Flow;
 Fluid Mechanics and Heat Transfer