Volume 31 Issue 8
Aug.  2016
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HUANG Dao-bo, LI Jian-dong, LIU Yong. Aeroelastic analysis of rotor airfoil based on CFD/CSD tight coupling method[J]. Journal of Aerospace Power, 2016, 31(8): 1820-1829. doi: 10.13224/j.cnki.jasp.2016.08.004
Citation: HUANG Dao-bo, LI Jian-dong, LIU Yong. Aeroelastic analysis of rotor airfoil based on CFD/CSD tight coupling method[J]. Journal of Aerospace Power, 2016, 31(8): 1820-1829. doi: 10.13224/j.cnki.jasp.2016.08.004

Aeroelastic analysis of rotor airfoil based on CFD/CSD tight coupling method

doi: 10.13224/j.cnki.jasp.2016.08.004
  • Received Date: 2015-07-21
  • Publish Date: 2016-08-28
  • By coupling the calculation of the unsteady aeroforce and the vibration response through the development of CFD/CSD (computational fluid dynamics/computational structure dynamics) tight coupling method, the Fluent code was calculated, and the data of structural response and dynamic load were exchanged by UDF (user defined function)and reading and writing the I/O (input/output) files. The aerodynamic characteristics and vibration response of the airfoil at the condition of pitching motion, plunging (flapping) motion and periodic alternating incoming flow were studied. Numerical results indicated that the aerodynamic load was periodic, showing a smoothing hysteresis curve in rotating process,and the flapping responses also showed a cyclical phenomenon, the pitching response showed slight oscillation at slight stall condition. At the deep stall condition, the aerodynamic load or structural response showed strong nonlinear oscillation, high frequency components were more obvious.

     

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