A numerical study of turbulent, confined, swirling jets
Abstract
The flow field in a model combustor composed of two confined, coaxial, swirling jets under noncombusting conditions has been numerically investigated by means of the k/epsilon model of turbulence. Mean flow results are obtained for different flow conditions to determine the effect of the inner and outer swirl on the recirculation zone (which is used for flame stabilization under combustion conditions). The results show that a recirculation zone occurs at the centerline and is in the form of a one-celled toroidal vortex. The diameter of this recirculation zone first decreases and then increases when the magnitude of the outer swirl is first decreased from counter-swirl to zero, and then increased to give co-swirl flow conditions.
- Publication:
-
Numerical Methods in Laminar and Turbulent Flow
- Pub Date:
- 1981
- Bibcode:
- 1981nmlt.proc..401R
- Keywords:
-
- Combustible Flow;
- Computational Fluid Dynamics;
- Numerical Flow Visualization;
- Swirling;
- Turbulent Jets;
- Boundary Value Problems;
- Flow Distribution;
- K-Epsilon Turbulence Model;
- Recirculative Fluid Flow;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer