Numerical simulation of cavity flow induced noise by LES and FW-H acoustic analogy
The predictions of cavity flow and flow-induced noise are two important and complex issues in fluid-acoustic coupling field. Numerical studies for these issues are performed in the paper by large eddy simulation (LES) and FW-H acoustic analogy . Firstly, the wall pressure fluctuations of plate, foil, shutter hole are computed and compared with experimental results. The robustness of large eddy simulation in unsteady flow calculation is analyzed. Secondly, the calculation of a 2-D cavity flow are accomplished. The power spectrum of pressure fluctuations is compared with measured data and the vorticity distribution is analyzed.Finally, the flow induced noises of two 3D cavities are predicted. The computed results are compared with experimental data of Large Circulation Channel in CSSRC. It shows that the numerical prediction method in the paper is credible.
cavity flow flow induced noise wall pressure fluctuations Large eddy simulation FW-H equation
Nan Zhang Hong-cui Shen Hui-zhi Yao
China Ship Scientific Research Center,Wuxi,China
国际会议
9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)
上海
英文
243-248
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）