A numerical study of co- and counter-swirling confined coaxial jets
Abstract
Confined inert coswirling and counterswirling coaxial turbulent flows have been calculated with the k-epsilon turbulence model. Governing transport equations are solved by using a modified version of the TEACH-T program. Results show that for a strong inner swirl which can induce a recirculation region itself, coswirling the outer flow increases both length and width of the recirculation region. However, counterswirling reduces the length of recirculation region and increases its width; therefore, it creates a more compact recirculation region with a larger recirculating mass and higher turbulence intensities in the immediate upstream region.
- Publication:
-
22nd Joint Propulsion Conference
- Pub Date:
- June 1986
- Bibcode:
- 1986jpha.confT....K
- Keywords:
-
- Coaxial Flow;
- Computational Fluid Dynamics;
- Flame Stability;
- Swirling;
- Turbulent Jets;
- Incompressible Flow;
- K-Epsilon Turbulence Model;
- Kinetic Energy;
- Mass Flow;
- Recirculative Fluid Flow;
- Velocity Distribution;
- Viscosity;
- Fluid Mechanics and Heat Transfer