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.
Observation of the Vortical Flow over a Yawed Delta Wing
Journal of Aerospace Engineering ; 25 , 4 ; 613-626
2011-09-10
142012-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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