Abstract
The dynamics of a spatially developing countercurrent mixing layer is studied in a parameter space including velocity ratio, density ratio, and convective Mach number. Under an appropriate set of operating conditions, the countercurrent mixing layer displays strong global oscillations which significantly alter the spatial development of the flow. Evidence is presented which suggests these oscillations are associated with a transition from convective to absolute instability. Countercurrent mixing is examined as a novel control strategy of supersonic free shear flows. Experiments indicate that counterflow can be used effectively to enhance mixing in supersonic axisymmetric jets. It is also demonstrated that counterflow can be successfully employed for the thrust vector control of high-speed rectangular jets.
Original language | English (US) |
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Title of host publication | AIAA 2nd Shear Flow Conference, 1993 |
Publisher | American Institute of Aeronautics and Astronautics Inc, AIAA |
State | Published - Jan 1 1993 |
Event | AIAA 2nd Shear Flow Conference, 1993 - Orlando, United States Duration: Jul 6 1993 → Jul 9 1993 |
Other
Other | AIAA 2nd Shear Flow Conference, 1993 |
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Country/Territory | United States |
City | Orlando |
Period | 7/6/93 → 7/9/93 |