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Control of unsteady vortical lift on an airfoil by leading-edge blowing-suction

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Abstract

The effects of leading-edge blowing-suction on the vortex flow past an airfoil at high incidence are investigated numerically by solving the Navier-Stokes equations. The results indicate that the frequency of the flowfield excited by the periodic blowing-suction locks into the forcing frequency, which is half of the dominant frequency for the flow past a fixed airfoil without injection. In that case, a well-developed primary leading-edge vortex occupies the upper surface of the airfoil and the largest lift augmentation is obtained.

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Authors and Affiliations

  1. University of Science and Technology of China, 230026, Hefei, China

    Yang Guowei, Wang Shanwu, Liu Ningyu & Zhuang Lixian

Authors
  1. Yang Guowei
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  2. Wang Shanwu
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  3. Liu Ningyu
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  4. Zhuang Lixian
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The project supported by the National Defence Research Fund of China

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Guowei, Y., Shanwu, W., Ningyu, L. et al. Control of unsteady vortical lift on an airfoil by leading-edge blowing-suction. Acta Mech Sinica 13, 304–312 (1997). https://doi.org/10.1007/BF02487189

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  • DOI: https://doi.org/10.1007/BF02487189

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