摘要
本文介绍了气动噪声预测的计算方法及相应的数值仿真模型,其中包括计算气动声学方法(Computational Aero-Acousti)、莱特希尔声类比方法(Lighthill’s Acoustic Analogy)以及混合计算方法。气动噪声预测的关键点在于选择合适的计算方法。本文详细介绍了这些方法的原理和适用范围,特别对ANSYS Fluent中的四种噪声算法进行分析。在具体的算法介绍中,详细探讨了FW-H声学比拟法和宽频噪声声源模型。FW-H声学比拟法通过结合CFD方法和声学类比理论,能够精确预测气动噪声的辐射特性,适用于解决飞行器绕流引起的远场气动噪声分析。通过结合数值模拟和声学理论,宽频噪声声源模型能够提供更精确、更灵活的噪声预测方法。尤其适用于分析流体场壁面的噪声强度分布。论文详细介绍了这些模型的原理、实现方法以及在ANSYS Fluent中的应用,为噪声场的计算与优化提供了思路与指导。
This paper introduces the calculation methods and corresponding numerical simulation models for predicting aerodynamic noise,including Computational Aero-Acoustics methods,Lighthill's Acoustic Analogy,and hybrid calculation methods.The key to predicting aerodynamic noise lies in choosing the appropriate calculation method.The article provides a detailed explanation of the principles and applicable ranges of these methods,particularly analyzing four noise algorithms in ANSYS Fluent.In the specific algorithm introduction,the FW-H acoustic analogy method and the wideband noise source model are discussed in detail.The FW-H acoustic analogy method,by combining CFD methods and acoustic analogy theory,can accurately predict the radiation characteristics of aerodynamic noise and is applicable for analyzing far-field aerodynamic noise generated by aircraft flow.By combining numerical simulation and acoustic theory,the wideband noise source model can provide a more precise and flexible noise prediction method,particularly suitable for analyzing the noise intensity distribution on the fluid field's surface.The paper elaborates on the principles,implementation methods,and applications of these models in ANSYS Fluent,offering insights and guidance for noise field computation and optimization.
作者
郑超
王贺远
高启
崔永龙
谢志豪
李奇
王帅皓
ZHENG Chao;WANG He-yuan;GAO Qi;CUI Yong-long;XIE Zhi-hao;LI Qi;WANG Shuai-hao(China Shipbuilding and Marine Engineering Design and Research Institute,Shanghai 200011,China)
出处
《价值工程》
2024年第13期143-147,共5页
Value Engineering
关键词
数值计算方法
计算气动声学
莱特希尔声类比
混合计算方法
FW-H声学比拟法
宽频噪声声源模型
numerical calculation methods
computational aero-acoustics
lighthill's acoustic analogy
hybrid computational methods
Ffowcs williams-hawkings(FW-H)acoustic analogy
broadband noise source model
作者简介
郑超(1993-),男,上海人,工程师,硕士,研究方向为轮机工程。
