Towards Simulation Of Far-Field Aerodynamic Sound From A Circular Cylinder Using Openfoam
INTERNATIONAL JOURNAL OF AEROACOUSTICS(2014)
摘要
The low-Mach number flow-induced noise by the flow past a circular cylinder at sub-critical regime was predicted. First, to assess the accuracy of the numerical methodology, the laminar flow over a circular cylinder at the Reynolds number Re = 140 and Mach number M = 0.2 was calculated by direct solution of the unsteady compressible Navier-Stokes equations. Second, the sound generated by a circular cylinder at the Reynolds number Re = 2.2 x 10(4) and Mach number M = 0.06 was simulated using a technique of large-eddy simulation. For both cases, the calculated acoustic fields showed a dipole directivity, similar to a natural vortex shedding. The impact of the Doppler effect was investigated and discussed as well. In general, the computed aerodynamic and far-field acoustic results were found to be in good agreement with available experimental measurements and analytical relationships.
更多查看译文
关键词
circular cylinder,simulation,far-field
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要