三维动态失速模型研究

基金项目: 国家973计划资助项目(2007CB714600)

Modelling of Three-Dimensional Dynamic Stall

Jiangsu Key Laboratory of Hi-Tech Research for Wind Turbine Design, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China

摘要: 研究了一个等速上扬的三维直机翼的动态失速过程，并对失速现象的产生机理及发展过程给出定性的分析．通过与二维情况的对比，重点考察了三维情况下动态失速涡的产生、发展及在物面上的移动对失速性能的影响．在加深了对三维动态失速原理理解的基础上，建立了三维的动态失速模型，能较好地模拟三维动态失速下机翼的气动性能．
- 非定常流动 /
- 三维动态失速 /
- 分离流 /
- 涡运动
Abstract: The dynamic stall process in three-dimensional (3D) case on a rectangular wing undergoing a constant rate ramp-up motion was introduced to provide qualitative analysis about the onset and development of the phenomenon of the stall.Subsequently,on the base of having enhanced the understanding of the mechanism of the dynamic stall,a 3D dynamic stall model was constructed with the emphasis of the onset,growth and the convection of dynamic stall vortex on the 3D wing surface.The results show that this engineering dynamic stall model can simulate the 3D unsteady aerodynamic performance appropriately.
- unsteady flow /
- 3D dynamic stall /
- separation flow /
- vortex motion

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