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Volume 47 Issue 6
Jun.  2021
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Journal of Beijing University of Aeronautics and Astronautics  > 2021  >  47(6): 1138-1144.
ZHANG Qing, YE Zhengyin. Aerodynamic exploration for wavy airfoil based on NACA0030[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1138-1144. doi: 10.13700/j.bh.1001-5965.2020.0135(in Chinese)
Citation: ZHANG Qing, YE Zhengyin. Aerodynamic exploration for wavy airfoil based on NACA0030[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1138-1144. doi: 10.13700/j.bh.1001-5965.2020.0135(in Chinese)
shu

Aerodynamic exploration for wavy airfoil based on NACA0030

doi: 10.13700/j.bh.1001-5965.2020.0135
  • 1.

    School of Aircraft, Xi'an Aeronautical University, Xi'an 710077, China

  • 2.

    School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore

  • 3.

    School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

Funds:

National High-tech Research and Development Program of China 2014AA7060201

National Natural Science Foundation of China 11732013

Natural Science Basic Research Program of Shaanxi 2019JM-290

More Information
  • Corresponding author: YE Zhengyin. E-mail: yezy@nwpu.edu.cn
  • Received Date: 13 Apr 2020
  • Accepted Date: 15 May 2020
  • Publish Date: 20 Jun 2021
    Abstract

  • Compared with smooth airfoil, the aerodynamic characteristics of wavy airfoil exhibit some unique features. In order to further explore the aerodynamic characteristics of the wavy configuration, based on the previous wind tunnel tests, a group of wavy airfoils with different geometric shape modified from NACA0030 were designed and then unsteady numerical simulations were carried out in details to investigate the effect of waviness on the vortical structure in the flow field and overall aerodynamic characteristics in low Reynolds number (Re=12×104) region. Final results show that, compared to the smooth airfoil, the separation flow for the wavy airfoil is more obvious, and the lift and its slope decrease significantly, but the stalling is delayed. The smoother the wavy surface is, the closer the aerodynamic characteristics are to the smooth airfoil. Although the pressure drag of the wavy wing is greater than that of the smooth airfoil, the recirculation generated in the corrugation can reduce the viscous drag.

     

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