Volume 34 Issue 12
Dec.  2019
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Article Navigation >  Journal of Aerospace Power  > 2019  >  34(12): 2599-2607
ZENG Jianan, ZHU Qinhua, SHEN Suiyuan. Three-dimensional effect of unsteady dynamic stall of cycloidal propeller[J]. Journal of Aerospace Power, 2019, 34(12): 2599-2607. doi: 10.13224/j.cnki.jasp.2019.12.008
Citation: ZENG Jianan, ZHU Qinhua, SHEN Suiyuan. Three-dimensional effect of unsteady dynamic stall of cycloidal propeller[J]. Journal of Aerospace Power, 2019, 34(12): 2599-2607. doi: 10.13224/j.cnki.jasp.2019.12.008
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Three-dimensional effect of unsteady dynamic stall of cycloidal propeller

doi: 10.13224/j.cnki.jasp.2019.12.008

  • National Key Laboratory of Science and Technology on Rotorcraft Aeromechanics,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2019-05-28
  • Publish Date: 2019-12-28
    Abstract
  • The reliability and applicability of two overset mesh methods were verified. Then numerical analysis of the unsteady vortex flow and induced separation characteristics of cycloidal propeller in the two-/three-dimensional cases was carried out, laying the foundation for studying the distribution of spanwise aerodynamics with azimuth and the induced velocity distribution of the global flow field, meanwhile the wake capture accuracy and vorticity dissipation characteristics were also analyzed. Results showed that, under the influence of three-dimensional effects such as tangential velocity and spanwise induced velocity of cycloidal propeller, the difference of transient aerodynamic extremum between the two calculation results reached 44%. The generation, shedding and reattachment of three-dimensional dynamic stall vortices were obviously weaker than two-dimensional airfoil, yielding a great impact on the unsteady aerodynamic characteristics of cycloidal propeller.

     

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