| 基于SNGR方法的后缘噪声数值模拟 |
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| 引用本文： | 陈荣钱,伍贻兆,夏健.基于SNGR方法的后缘噪声数值模拟[J].计算物理,2011,28(5):698-704. |
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| 作者姓名： | 陈荣钱 伍贻兆 夏健 |
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| 作者单位： | 南京航空航天大学航空宇航学院, 江苏 南京 210016 |
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| 摘 要： | 采用随机噪声产生和传播(SNGR)方法对后缘噪声进行数值模拟.SNGR方法结合随机方法和计算流体力学,耗费较少的计算资源就可以预测噪声水平.数值模拟时采用有限体积法求解雷诺平均Navier-Stokes(RANS)方程;采用有限差分法求解声学扰动方程,数值格式采用色散关系保持(DRP)格式,远场边界条件采用无反射边界条件.以二维平板和NACA0012翼型为例,编制程序,与参考结果对比表明,程序可以预测后缘噪声.
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| 关 键 词： | 计算流体力学 计算气动声学 声学扰动方程 随机模型 后缘噪声 |
| 收稿时间： | 2010-07-29 |
| 修稿时间： | 2011-03-31 |
Simulation of Trailing Edge Noise Based on Stochastic Noise Generation and Radiation Method |
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| CEHN Rongqian,WU Yizhao,XIA Jian.Simulation of Trailing Edge Noise Based on Stochastic Noise Generation and Radiation Method[J].Chinese Journal of Computational Physics,2011,28(5):698-704. |
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| Authors: | CEHN Rongqian WU Yizhao XIA Jian |
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| Institution: | School of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | Simulation of trailing edge noise based on stochastic noise generation and radiation(SNGR) method is shown.The SNGR method combines stochastic method with computational fluid dynamics,which gives acceptable noise result with relatively low computation cost.Reynolds averaged Navier-Stokes(RANS)equations are solved by finite volume method.Acoustic perturbation equations are solved by finite difference method.Numerical scheme is a dispersion-relation-preserving(DRP) scheme.Non-reflection far-field boundary con... |
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| Keywords: | computational fluid dynamics computational aeroacoustics acoustic perturbation equations stochastic model trailing edge noise |
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