Computation of recirculating compressible flow in axisymmetric geometries
Abstract
A computational study of compressible, turbulent, recirculating flow in axisymmetric geometries is reported in this paper. The SIMPLE algorithm was used in the differencing scheme and the k-epsilon model for turbulence was used for turbulence closure. Special attention was given to the specification of the boundary conditions. The study revealed the significant influence of the boundary conditions on the solution. The eddy length scale at the inlet to the solution domain was the most uncertain parameter in the specification of the boundary conditions. The predictions were compared with the recent data based on laser velocimetry; the two are seen to be in good agreement. The present study underscores the need to have a more reliable means of specifying the inlet boundary conditions for the k-epsilon turbulence model.
- Publication:
-
AIAA, Aerospace Sciences Meeting
- Pub Date:
- January 1985
- Bibcode:
- 1985aiaa.meet.....I
- Keywords:
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- Axisymmetric Flow;
- Combustion Chambers;
- Compressible Flow;
- Computational Fluid Dynamics;
- Recirculative Fluid Flow;
- Flow Equations;
- K-Epsilon Turbulence Model;
- Low Reynolds Number;
- Radial Velocity;
- Turbojet Engines;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer