上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (12): 1868-1873.

• 数学 • 上一篇    下一篇

基于大涡模拟的开孔潜体流噪声数值模拟

张允，傅慧萍，缪国平   

  1. (上海交通大学 船舶海洋与建筑工程学院,上海 200240)
  • 收稿日期:2011-01-05 出版日期:2011-12-31 发布日期:2011-12-31

LES-Based Numerical Simulation of Flow Noise for Submerged Body with Cavities

 ZHANG  Yun, FU  Hui-Ping, MIAO  Guo-Ping   

  1.  (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-01-05 Online:2011-12-31 Published:2011-12-31

摘要：  基于大涡模拟（LES）方法和Lighthill声学类比方法，对一倒T型开孔进行流场及流激噪声进行数值模拟，计算所得结果与公开发表文献上的数值及实验结果吻合良好，验证了基于LES的流噪声数值模拟方法的可行性.在此基础上，对某三维开孔潜体（原型）及其改型进行了流噪声数值模拟，对潜体内腔流场及其噪声辐射结果进行分析，从数值模拟的角度验证了改型潜体在阻力和噪声性能上都要优于原型潜体.
 

关键词: 潜体, 流噪声, 大涡模拟, Lighthill声类比

Abstract: A numerical simulation of flow and flow-induced noise was carried out on a duct cavity with Lighthill acoustical analogy and large eddy simulation method. The results agree well with the computed and experimental results in some published literature. The validation of the flow noise computation method used in this paper was verified. Then numerical simulations were carried out on two types of 3D submerged bodies, the prototype and the modified type. The inner flow patterns and the noise radiation results of both types were analyzed. The numerical results show that both the resistance and the flow noise level of the modified type are lower than those of the prototype.

Key words: submerged body, flow noise, large eddy simulation, Lighthill acoustical analogy

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