The prediction of reactive turbulent flows
Abstract
A finite volume method with implicit time steps is used to model turbulent premixed flames passing through combustion chambers that feature either planar or axisymmetric geometries. Flame entry speeds over the 5200 m/sec range are considered. An example is furnished for a combustion heat of 1600 K, an entry velocity of 5 m/sec, and turbulence equal to 0.002 kg/msec, with the results compared to experimental data. It is found that the predicted recirculation is less than that observed empirically, due to using a value for the turbulent viscosity in the reactive flow that was the same as the value used in a nonreactive flow. The implicit method is concluded to be more accurate in the asymptotic regime than an explicit characterization.
 Publication:

ONERA
 Pub Date:
 1983
 Bibcode:
 1983agar.symp.....D
 Keywords:

 Combustible Flow;
 Combustion Physics;
 Computational Fluid Dynamics;
 Premixed Flames;
 Turbulent Flow;
 Boundary Value Problems;
 Computational Grids;
 Finite Volume Method;
 Prediction Analysis Techniques;
 Fluid Mechanics and Heat Transfer