流致噪声机理及预报方法研究综述
发布时间：2018-11-17 07:28
【摘要】：从自由湍流噪声、壁面湍流噪声、转子噪声和空腔流动4个方面对流致噪声机理及预报方法进行综述。对目前工程应用中的3个主要流致噪声预报方法,即Lighthill声比拟理论、Kirchhoff方法和涡声理论的基本原理及适用性进行详细讨论,并对流致噪声数值模拟方法进行总结。其中,Lighthill声比拟理论属噪声源先验理论,虽方便应用但不能描述声流相互作用基础问题;Kirchhoff方法在运用的过程中虽不需要确切获知源的属性,但声源区的计算精度很重要;涡声理论在声流相互作用等领域有着良好的研究前景。自由湍流噪声以四极子雷诺应力源为主,存在如螺旋桨等固壁边界时则会产生偶极子源,在低马赫数流动中是更为有效的声源。
[Abstract]:The mechanism and prediction methods of convection-induced noise are summarized from four aspects: free turbulence noise, wall turbulence noise, rotor noise and cavity flow. This paper discusses in detail the basic principles and applicability of three main flow induced noise prediction methods in engineering applications, namely, Lighthill sound analogy theory, Kirchhoff method and vortex sound theory, and summarizes the numerical simulation methods of convection induced noise. Among them, Lighthill acoustic analogy theory belongs to the prior theory of noise source, although it is convenient to apply, it can not describe the basic problem of acoustic flow interaction, although the Kirchhoff method does not need to know exactly the attribute of the source in the process of application, the calculation accuracy of the sound source region is very important. Vortex sound theory has a good prospect in the field of acoustic flow interaction. The free turbulence noise is dominated by quadrupole Reynolds stress source, and dipole source is produced when there are solid wall boundary such as propeller, which is a more effective sound source in low Mach number flow.
【作者单位】： 中国舰船研究设计中心;
【基金】：国家部委基金资助项目
【分类号】：TB53
本文编号：2336962
[Abstract]:The mechanism and prediction methods of convection-induced noise are summarized from four aspects: free turbulence noise, wall turbulence noise, rotor noise and cavity flow. This paper discusses in detail the basic principles and applicability of three main flow induced noise prediction methods in engineering applications, namely, Lighthill sound analogy theory, Kirchhoff method and vortex sound theory, and summarizes the numerical simulation methods of convection induced noise. Among them, Lighthill acoustic analogy theory belongs to the prior theory of noise source, although it is convenient to apply, it can not describe the basic problem of acoustic flow interaction, although the Kirchhoff method does not need to know exactly the attribute of the source in the process of application, the calculation accuracy of the sound source region is very important. Vortex sound theory has a good prospect in the field of acoustic flow interaction. The free turbulence noise is dominated by quadrupole Reynolds stress source, and dipole source is produced when there are solid wall boundary such as propeller, which is a more effective sound source in low Mach number flow.
【作者单位】： 中国舰船研究设计中心;
【基金】：国家部委基金资助项目
【分类号】：TB53
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