Effect of Cross-Wire Location on the Mixing of Underexpanded Sonic Jets
Publication: Journal of Aerospace Engineering
Volume 20, Issue 3
Abstract
This paper presents the results of an experimental investigation carried out to study the effectiveness of a passive control in the form of a cross-wire located at the nozzle exit and downstream of the nozzle exit for promoting jet mixing. The advantage of locating the cross-wire at downstream of the nozzle exit is to keep the flow at the nozzle exit undisturbed, to avoid thrust loss. Sonic jets at nozzle pressure ratios (NPR) of 3, 5, and 7 were investigated with cross-wire at the nozzle exit, at and from the nozzle exit. The cross-wire influenced the supersonic core, causing the significant reduction of core length and mixing enhancement. The cross-wire also results in diffusion of shocks for all the cross-wire locations and at all tested NPRs.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 20 • Issue 3 • July 2007
Pages: 179 - 185
Copyright
© 2007 ASCE.
History
Received: Dec 9, 2005
Accepted: Oct 9, 2006
Published online: Jul 1, 2007
Published in print: Jul 2007
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