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A physical model of asymmetric vortices flow structure in regular state over slender body at high angle of attack

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Abstract

In subcritical Reyolds number flow region, the repeatable and determinate asymmetric vortices flow at regular state can be obtained by manually setting mini-perturbation on the nose of a pointed ogive-cylinder model at high angle of attack and zero side slip. Test results of this study involve surface pressure distributions, sectional-side-force distributions and flow visualizations. The analyses of these results revealed a complicated multi-vortices system at regular state in which asymmetric twin vortices with inception region and fully developed region, asymmetric triple vortices, four vortices region, five vortices region and Karman-vortex-street-like flow region are developed along the slender body. The correlation between multi-vortices system structures and corresponding sectional-side-force distribution is given. The behaviors of multi-vortices flow structure at the peculiar points of sectional-side-force distributions and characteristics of corresponding pressure distribution are analysed. Finally, a physical model of asymmetric multi-vortices flow structure in regular state over slender body is developed.

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Authors and Affiliations

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

    Deng Xueying, Wang Gang, Chen Xuerui, Wang Yankui & Liu Peiqing

  2. Airfoil Research Center, Northwest Polytechnic University, 710072, Xi'an, China

    Xi Zhongxiang

Authors
  1. Deng Xueying
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  2. Wang Gang
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  3. Chen Xuerui
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  4. Wang Yankui
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  5. Liu Peiqing
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  6. Xi Zhongxiang
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Correspondence to Deng Xueying.

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Deng, X., Wang, G., Chen, X. et al. A physical model of asymmetric vortices flow structure in regular state over slender body at high angle of attack. Sci. China Ser. E-Technol. Sci. 46, 561–573 (2003). https://doi.org/10.1360/02ye0164

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  • DOI: https://doi.org/10.1360/02ye0164

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