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Influence of separated vortex on aerodynamic noise of an airfoil blade |
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| Authors: | Soichi Sasaki Hajime Takamatsu Masao Tsujino Haruhiro Tsubota Hidechito Hayashi |
| Affiliation: | [1]Faculty of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan [2]Graduate School of Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan [3]Research Division, Komatsu Ltd., 1200, Manda, Hiratsuka-shi, Kanagawa 254-8567, Japan |
| Abstract: | In order to clarify the mechanism by which aerodynamic noise is generated from separated flow around an airfoil blade,the relation between the attack angle and the aerodynamic noise of the blade was analyzed using a wind tunnel experiment and a CFD code.In the case of rear surface separation,the separated vortex which has a large-scale structure in the direction of the blade chord is transformed into a structure that concentrates at the trailing edge with an increase in the attack angle.The aerodynamic nois... |
| Keywords: | Vortex Aerodynamic Noise Shear Flow Separation Airfoil |
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