A model for confined jets in cylindrical or divergent ducts
Abstract
A numerical study is performed of turbulent jet flow in circular and divergent circulating channels. A divergence half-angle of 2.5 deg is considered for the incompressible, steady rotating flows. The TEACH program is employed to obtain a solution for the equations of motion over a variable step grid with extended meshes. Boundary conditions are also defined, and comparisons are made with laboratory data for zero, medium and strong circulation. Good agreement is found in the case of a straight channel, while in a divergent channel the recirculation effects become significant, allowing velocity to be predicted but not pressure.
- Publication:
-
Association Aeronautique et Astronautique de France
- Pub Date:
- November 1984
- Bibcode:
- 1984aaaf.coll.....Z
- Keywords:
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- Computational Fluid Dynamics;
- Ducted Flow;
- Jet Flow;
- Turbulent Jets;
- Boundary Conditions;
- Boundary Value Problems;
- Flow Geometry;
- Flow Velocity;
- Kinetic Energy;
- Orthogonality;
- Pressure Distribution;
- Recirculative Fluid Flow;
- Fluid Mechanics and Heat Transfer