A note on Favre averaging in variable density flows
Abstract
The concept of a Favre probability density function is introduced and this formalizes the definition of Favre averages in variable density flows. Current approaches to turbulence modeling suggest that it is the Favre probability density function which models in such flows. This is of particular use in the modeling of conserved scalars since the conservation equations deliver the Favre average and variance.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 May 1975
 Bibcode:
 1975STIN...7532420B
 Keywords:

 Flow Distribution;
 Probability Density Functions;
 Squid Project;
 Turbulent Flow;
 Equations Of Motion;
 Fluid Mechanics;
 Gas Flow;
 Mathematical Models;
 Fluid Mechanics and Heat Transfer