Subsonic and Transonic Jet Control with Cross-Wire

Cross-wire effectiveness for subsonic and sonic jet control is reported in this paper. Mach 0.4, 0.6, 0.8, and 1.0 axisymmetric jets from a convergent nozzle with cross-wire along a diameter at the exit were studied. The cross-wire was found to be effective in promoting jet mixing right from the noz...

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Bibliographic Details
Published in:AIAA journal 2006-11, Vol.44 (11), p.2700-2705
Main Authors: Lovaraju, P, Rathakrishnan, E
Format: Article
Language:English
Subjects:
Aircraft
Exact sciences and technology
Flow control
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Instrumentation for fluid dynamics
Jets
Physics
Studies
Turbulent flows, convection, and heat transfer
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Summary:Cross-wire effectiveness for subsonic and sonic jet control is reported in this paper. Mach 0.4, 0.6, 0.8, and 1.0 axisymmetric jets from a convergent nozzle with cross-wire along a diameter at the exit were studied. The cross-wire was found to be effective in promoting jet mixing right from the nozzle exit, at all Mach numbers. For the underexpanded sonic jet at nozzle pressure ratio 3, 5, and 7, the cross-wire influenced the core and the shock cells, causing significant reduction of core length and weakening of the shocks at all levels of underexpansion. The jets from the nozzle with cross-wire spread faster in the direction normal to the cross-wire. [PUBLICATION ABSTRACT]
ISSN:0001-1452
1533-385X
DOI:10.2514/1.17637