Volume 47 Issue 7
Jul.  2021
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LIU Keqi, LI Guohui, ZHANG Haonan, et al. Numerical simulation of flow around slender body with disturbing block[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(7): 1495-1504. doi: 10.13700/j.bh.1001-5965.2020.0676(in Chinese)
Citation: LIU Keqi, LI Guohui, ZHANG Haonan, et al. Numerical simulation of flow around slender body with disturbing block[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(7): 1495-1504. doi: 10.13700/j.bh.1001-5965.2020.0676(in Chinese)

Numerical simulation of flow around slender body with disturbing block

doi: 10.13700/j.bh.1001-5965.2020.0676
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  • Corresponding author: LI Guohui, E-mail: ghleeauaf@sina.com
  • Received Date: 02 Dec 2020
  • Accepted Date: 30 Jan 2021
  • Publish Date: 20 Jul 2021
  • In this paper, the influence of the head disturbance block on the structure of the flow around the back of the slender body is studied. The slender body model is simulated at the angle of attack of 5°-60° through numerical simulation. The numerical calculation method selected is the Reynolds Average Navier-Stokes (RANS) method. This paper mainly compares whether to add a disturbance block model at an angle of attack of α=20°, 30°, analyzes the development of the flow around different sections along with the axial position, proposes a method to verify the topological structure, and finds the position of the singularity in each flow state. The position of the vortex core is used to analyze the development of the flow around the back of the model. It is found that the premise of adding a known regular disturbance block can speed up the conversion speed between the surrounding flow structures, and will reduce the angle of attack generated by the asymmetric vortex.

     

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