The effect of constructive and destructive interference on the downstream development of twin jets in a crossflow. I - Destructive interference of laterally spaced jets
Abstract
This experimental study focuses on the interaction between two circular jets exhausting into an otherwise undisturbed crossflow. In this study, flow visualization has been used to study the penetration of twin jets transversely injected into a crossflow. The parameters investigated include jet centerline-to-centerline spacing and momentum flux ratio. The jets were studied laterally spaced across the approaching freestream flow. Qualitative information such as penetration versus downstream position was extracted from the visualization data. It was determined that when the momentum flux ratio was low and the jet-to-jet spacing was small, the growth of the penetration was reduced as the jets developed downstream. For high momentum flux ratios and large jet-to-jet spacings, the penetration of the jet structures was found to be within 5 percent of the single jet case.
- Publication:
-
AIAA, Fluid Dynamics, 21st Plasma Dynamics and Lasers Conference, 21st, Seattle, WA, June 18-20, 1990. 17 p.
- Pub Date:
- June 1990
- Bibcode:
- 1990fdpd.confU....D
- Keywords:
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- Cross Flow;
- Flow Distortion;
- Gas Injection;
- Gas Turbine Engines;
- Jet Exhaust;
- Flow Visualization;
- Momentum Transfer;
- Vortices;
- Fluid Mechanics and Heat Transfer