Volume 29 Issue 11
Nov.  2003
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Zhu Liguo, Lü Zhiyong. Unsteady structures over delta wings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(11): 1033-1037. (in Chinese)
Citation: Zhu Liguo, Lü Zhiyong. Unsteady structures over delta wings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(11): 1033-1037. (in Chinese)

Unsteady structures over delta wings

  • Received Date: 03 Jul 2003
  • Publish Date: 30 Nov 2003
  • Visualization with light sheet and PIV tests were performed to investigate some unsteady structures over delta wings. Discrete sub-vortices in the vortex sheet, interaction of the secondary vortex with main vortex, the frequency characteristics of the spiral form of vortex breakdown, the fluctuation of breakdown location, and vortex shedding at high angles of attack were studied respectively. Different frequency is given for unsteady structures.

     

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  • [1] Shih C, Ding Z. Unsteady structure of leading-edge vortex flow over a delta wing . AIAA paper 96-0664, 1996 [2] Gursul I, Xie W. Buffeting flow over delta wings[J]. AIAA J, 1999, 37(1):58~65 [3] Gad-el-Hak M, Blackwelder R F. The discrete vortices from a delta wing[J]. AIAA Journal, 1985, 23(6):961~963 [4] Payne F M, Ng T T, Nelson R C. Visualization and wake surveys of vortical flow over a delta wing [J]. AIAA J, 1988, 26(2):137~143 [5] Muller J, Hummel D. Time-accurate CFD analysis of the unsteady flow on a fixed delta wing . AIAA paper 2000-0138, 2000
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