| 基于涡限制法的旋翼气动噪声计算 |
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| 引用本文： | 许建华,宋文萍,韩忠华.基于涡限制法的旋翼气动噪声计算[J].航空学报,2011,32(12):2204-2212. |
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| 作者姓名： | 许建华 宋文萍 韩忠华 |
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| 作者单位： | 西北工业大学翼型叶栅空气动力学国家重点实验室,陕西西安,710072 |
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| 基金项目： | 翼型叶栅空气动力学国家重点实验室基金(9140C4201020802)~~ |
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| 摘 要： | 在直升机旋翼流动的数值模拟中,流动求解精度对旋翼气动噪声的预测有着重要影响.采用中心格式有限体积法求解可压缩Euler方程数值模拟旋翼绕流,并采用基于Ffowcs Williams- Hawkings( FW-H)方程的声类比方法计算旋翼气动噪声.为了抑制中心格式的数值耗散,保持机翼翼尖以及旋翼桨尖的尾涡结构,引入了涡...
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| 关 键 词： | 涡限制法 旋翼 气动噪声 Euler方程 涡流动 临界涡限制系数 |
| 收稿时间： | 2011-03-18; |
Prediction of Aeroacoustic Noise for Helicopter Rotors Based on Vorticity Confinement Method |
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| XU Jianhua,SONG Wenping,HAN Zhonghua.Prediction of Aeroacoustic Noise for Helicopter Rotors Based on Vorticity Confinement Method[J].Acta Aeronautica et Astronautica Sinica,2011,32(12):2204-2212. |
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| Authors: | XU Jianhua SONG Wenping HAN Zhonghua |
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| Institution: | XU Jianhua,SONG Wenping,HAN Zhonghua National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,Xi'an 710072,China |
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| Abstract: | In the numerical simulation of helicopter rotor in hover flight,the prediction of aeroacoustic noise for helicopter rotors is highly dependent on the capturing accuracy of vortical flow structure.In this paper,the compressible Euler equations are solved by using a finite volume method with a central scheme to simulate the flow around helicopter rotors,and the Ffowcs Williams-Hawkings(FW-H) equations are utilized to predict the aeroacoustic noise.In order to reduce the numerical dissipation and preserve the ... |
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| Keywords: | vorticity confinement method helicopter rotor aeroacoustic noise Euler equations vortical flow critical vorticity confinement coefficient |
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