Effects of Trailing-Edge Attachment on the Flow Structure over a Generic Delta Wing
Publication: Journal of Aerospace Engineering
Volume 30, Issue 5
Abstract
The objective of this work is to reveal the significance of a trailing-edge attachment on the flow structure over a generic nonslender delta wing using the dye visualization technique on the top-view plane. Instantaneous images are acquired by stereoscopic particle image velocimetry (stereo-PIV) to calculate time-averaged flow data, with angle of attack, , and yaw angle, , are varied within and , respectively. It is shown that time-mean locations of vortex breakdown for the nonslender delta and lambda wings occur in the field close to the wings. As a result, no remarkable alteration is observed for the spatial locations of the vortex breakdown. The experiments also show that the , which is a crucial parameter, alters the flow structure over the nonslender delta wing substantially compared with the lambda wing. It is concluded that the trailing-edge attachment plays vital role when becomes effective.
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Acknowledgments
The financial support of The Scientific and Technological Research Council of Turkey (TUBITAK) for the current study (No. 105M225) is gratefully acknowledged.
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Published In
Journal of Aerospace Engineering
Volume 30 • Issue 5 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jun 3, 2015
Accepted: Mar 16, 2017
Published online: Jun 8, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 8, 2017
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