Abstract
Abstract
In order to study the influence of modal to the noise of the blade, the tests of modal and noise are carried out in the cavitation tunnel. The modal of hydrofoil was measured in the water and the noises of the hydrofoil with different inflow velocity were tested. The results show that the frequency of the peak of the noise spectrum is not changed with the inflow speed increasing. The amplitude of the peak increases first and then decreases with the inflow speed increasing. The structural characteristic of the hydrofoil has important influence on the noise and the frequency of the peak is equal to the modal frequency.
Reference6 articles.
1. Aerodynamic sound generation by turbulent flow in the vicinity of a scattering half plane;Ffowcs Williams;Journal of Fluid Mechanics,1970
2. On sound generated aerodynamically: I. General Theory;Lighthill;Mathematical and Physical Sciences,1952
3. Simulation of acoustic scattering from a trailing edge;Singer;Journal of Sound and Vibration,2000
4. Vortex-shedding induced trailing-edge acoustics;Svennberg,2010
5. Vortex noise of isolated airfoils;Paterson;Journal of Aircraft,1973
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献