Mixing aids for supersonic flows

Details Mixing aids for supersonic flows Mixing aids for supersonic flows

1988-10-20

1990-02-13

Nilson, Robert G.

Fluid handling

Processes

137896, B01F 500

Patent

active

048997722

ABSTRACT:
A method and apparatus for injecting a secondary supersonic stream into a primary supersonic stream. A secondary flow nozzle is designed to contain non-uniformities so as to produce stream-wise vortices. The primary supersonic flow is allowed to flow over a ramp surrounding the secondary nozzle. At the aft end of the ramp, stream-wise vortices appear in the primary flow rotating in the same direction as the vortices in the secondary stream. As a consequence, the vortex strength is increased, leading to enhanced entrainment in mixing of the two streams.

REFERENCES:
patent: 4498786 (1985-02-01), Ruscheweyh
patent: 4521117 (1985-06-01), Ouwerkerk
Rao, G. V. R., "Analysis of a New Concept Rocket Nozzle", ARS Semi-Annual Meeting & Astronautical Exposition, Los Angeles, CA 5/9/60.

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