An analysis of turbulent diffusion flame in axismmetric jet
Abstract
The kinetic theory of turbulent flow was employed to study the mixing limited combustion of hydrogen in axisymmetric jets. The integro-differential equations in two spatial and three velocity coordinates describing the combustion were reduced to a set of hyperbolic partial differential equations in the two spatial coordinates by a binodal approximation. The MacCormick's finite difference method was then employed for solution. The flame length was longer than that predicted by the flame-sheet analysis, and was found to be in general agreement with a recent experimental result. Increase of the turbulence energy and scale resulted in an enhancement of the combustion rate and, hence, in a shorter flame length. Details of the numerical method as well as of the physical findings are discussed.
- Publication:
-
Final Report Illinois Univ
- Pub Date:
- April 1980
- Bibcode:
- 1980uchi.rept.....C
- Keywords:
-
- Burning Rate;
- Flame Stability;
- Jet Flow;
- Turbulent Diffusion;
- Finite Difference Theory;
- Flame Temperature;
- Flow Distribution;
- Kinetic Theory;
- Partial Differential Equations;
- Fluid Mechanics and Heat Transfer