3次元離散渦法によるWeis-Foghメカニズムにおける流れの解析 [in Japanese] Analysis of Flowfield in the Weis-Fogh Mechanism by the Three-dimensional Discrete Vortex Method [in Japanese]
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Three-dimensional flowfield about the wings in the Weis-Fogh mechanism is simulated by the discrete vortex method. The flat wings are approximated by vortex panels represented as vortex flames, and shed vortices are expressed by vortex sticks. Viscous effect is simulated by the method of core spreading. The flows at the fling and the rotating stages are calculated, and the vortex distributions, velocity fields and the force on the wings are obtained. The complex structure about the wings is clarified and the flow patterns agree well to those by flow visualizations. The lift is reasonable comparing with some previously reported results. The relationship between the lift and moment and the opening angle of the wing is also clarified.
- Aeronautical and Space Sciences Japan
Aeronautical and Space Sciences Japan 45(523), 435-443, 1997-08
The Japan Society for Aeronautical and Space Sciences