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Aeroacoustic study of the interaction of a rotating blade with a Batchelor vortex

机译:旋转叶片与Batchelor Vortex相互作用的空气声学研究

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The aeroacoustic response of the orthogonal interaction of a rotating blade with an isolated Batchelor vortex is studied by means of numerical simulation. The influence of the vortex tangential and axial velocity on the blade aerodynamics and on the acoustics radiated in the far field are investigated separately and compared to the results obtained considering the interaction of the blade with a vortex with both velocity components. Analyses show that the vortex tangential velocity is responsible for the noise level at low frequencies and that the vortex axial velocity is responsible for the noise level at high frequencies. For the range of frequencies in between, the interaction noise results from constructive interferences of the noise radiated separately by each velocity component of the vortex.
机译:通过数值模拟研究了旋转叶片与隔离的Batchelor涡流的正交相互作用的气动响应。单独研究涡旋切向和轴向速度对叶片空气动力学和辐射的声学的影响,并与考虑叶片与涡流相互作用的结果进行比较,与速度分量相互作用。分析表明,涡旋切向速度负责低频下的噪声水平,并且涡流轴向速度负责高频处的噪声水平。对于频率的频率范围,相互作用噪声由涡流的每个速度分别分别辐射的噪声的构造噪声产生。

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