Observation of the Vortical Flow over a Yawed Delta Wing
Publication: Journal of Aerospace Engineering
Volume 25, Issue 4
Abstract
The development and formation of the leading-edge vortices due to the change in the angle of attack, , and yaw angle, , for a unique cross-flow plane at a dimensionless distance of from the apex of the stationary delta wing with a sweep angle of were observed using stereoscopic particle-image velocimetry (stereo-PIV). In addition, the experiments were conducted on three different cross-flow planes such as and using dye visualization to reveal the development of leading-edge vortices over the delta wing. The angle of attack was varied within the range of and the yaw angle was varied within the range of . The vortical flow structure and loadings toward the wing surface due to the fluctuations and unsteadiness in the flow structure near the delta wing are investigated using time-averaged parameters such as streamlines, contours of vorticity distributions, Reynolds stress correlations, distributions of turbulent kinetic energy, vertical velocity, and RMS of vertical velocity fluctuations.
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Acknowledgments
The authors acknowledge the financial support of The Scientific and Technological Research Council of Turkey (TUBITAK) for funding under Project No. 105M225.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 25 • Issue 4 • October 2012
Pages: 613 - 626
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Dec 6, 2010
Accepted: Sep 8, 2011
Published online: Sep 10, 2011
Published in print: Oct 1, 2012
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