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.
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.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2011年第12期1868-1873,共6页
Journal of Shanghai Jiaotong University
关键词
潜体
流噪声
大涡模拟
Lighthill声类比
submerged body
flow noise
large eddy simulation
Lighthill acoustical analogy
作者简介
傅慧萍（1972-），女，江西省宜春市人，副教授．现主要从事计算流体力学研究电话（Tel．）：021-62933162；E—mail：fuhp@sjtu．edu．cn．
