Characteristics of jet impingement in a side-dump combustor
Abstract
In a two-dimensional simulator of a side-dump ramjet combustor, flow visualization is used to investigate the impingement of two jets on each other. In this configuration, the two jets are introduced into the combustor through rectangular ports in its sides. The jets impinge upon one another at the plane of symmetry of the combustor, with an angle of impingement equal to 180 deg. Counter-rotating vortex pairs are generated in the impinging region. The axes of the vortices are parallel to the plane of symmetry of the combustor. Vorticity measurement indicates that the strength of these vortices changes periodically due to their stretching in the downstream direction of the combustor. The mechanism of vortex generation and the effects of the combustor's dimensions on it are investigated.
- Publication:
-
AIAA Journal
- Pub Date:
- November 1986
- DOI:
- 10.2514/3.9520
- Bibcode:
- 1986AIAAJ..24.1752N
- Keywords:
-
- Dump Combustors;
- Flow Stability;
- Flow Visualization;
- Jet Impingement;
- Ramjet Engines;
- Exhaust Flow Simulation;
- Flow Distribution;
- Oscillating Flow;
- Vortex Generators;
- Vorticity;
- Fluid Mechanics and Heat Transfer