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Effects of a vectored trailing edge jet on delta wing vortex breakdown

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Abstract

Flow visualization was used to study the effects of a vectored trailing edge jet on the leading edge vortex breakdown of a 65° delta wing. The experimental results indicated that there is little effect of the jet on the leading edge vortex breakdown when the angle of the vectored jet is less than 10°. With the increase of the vectored angle β, the effect of the jet on the flow becomes stronger, i.e., the jet delays the leading edge vortex breakdown in the direction of the vectored jet, and accelerates breakdown of the other leading edge vortex. Moreover, the effect of the jet control tends to be weaker with the angle of attack.

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Abbreviations

C :

root chord length of delta wing

Ur :

jet velocity normalized by the freestream velocity

Xp :

increment in the leading edge vortex breakdown location due to blowing

ΔXp :

difference between the two leading edge vortex breakdown locations

α :

angle of attack

β :

vectored angle of the trailing edge jet

References

  • Helin HE, Watry CW (1996) Effect of trailing edge jet entrainment on delta wing vortices. AIAA J 34:802–804

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  • Nawrocki DA (1995) Differential and vectored trailing edge jet control of delta wing vortices. AIAA paper 95-0008

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Authors and Affiliations

  1. Fluid Mechanics Institute, Beijing University of Aeronautics and Astronautics, 100083, Beijing, China

    J. J. Wang & J. Y. Liu

  2. Department of Building and Construction, City University of Hong Kong, Hong Kong, China

    Q. S. Li

Authors
  1. J. J. Wang
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  2. Q. S. Li
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  3. J. Y. Liu
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Correspondence to J. J. Wang.

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Wang, J.J., Li, Q.S. & Liu, J.Y. Effects of a vectored trailing edge jet on delta wing vortex breakdown. Exp Fluids 34, 651–654 (2003). https://doi.org/10.1007/s00348-003-0615-z

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  • DOI: https://doi.org/10.1007/s00348-003-0615-z

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