Analysis of swirling jet turbulent mixing and combustion
Abstract
Flows generated by swirling jet turbulent mixing and combustion are investigated. The full NavierStokes equations for momentum and energy conservation, as well as for global continuity and species continuity are derived for the mean mass averaged variables of a compressible, turbulent, nonswirling or swirling plane, or axisymmetric flow in orthogonal curvilinear bodyoriented system of coordinates, which contain, in general, the six components of the Reynolds (turbulent) stress tensor. A simplified combustion model is assumed, represented by a onestep rate process between just two species, fuel and oxidant. In order to test the validity and reliability of the derived model equations in the simpler case of turbulent weakly swirling and combusting flows, a complete set of secondorder boundary layer (parabolic) equations is derived. It is believed that the numerical solution of the equations provides insight into the mechanism of swirling jet turbulent mixing and combustion.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 March 1981
 Bibcode:
 1981STIN...8125332S
 Keywords:

 Combustible Flow;
 Combustion Efficiency;
 Fuel Flow;
 Pollution Control;
 Reaction Kinetics;
 Turbulent Mixing;
 Diffusivity;
 Energy Conservation;
 Mathematical Models;
 Mixing Length Flow Theory;
 NavierStokes Equation;
 Reynolds Stress;
 Fluid Mechanics and Heat Transfer