噪声与振动控制2016，Vol.36Issue(3)：48-51,150,5.DOI:10.3969/j.issn.1006-1335.2016.03.010
变截面管道流噪声数值计算
Numerical Simulation of Flow-induced Noise in the Pipelines with Variable Cross-sections
赵威 1彭旭 1陈明 1李奇2
作者信息
- 1. 武汉第二船舶设计研究所，武汉 430064
- 2. 上海海基盛元信息科技有限公司，上海 200235
- 折叠
摘要
Abstract
The flow-induced noise in pipelines is simulated using the variational formulations of Lighthill acoustic analogy. Simulation of the flow-induced noise includes two-steps:(1) calculating the unsteady flow noise sources through the refined flow field grid;(2) using the interpolation method to the results of the noise source simulation to determine the acoustic nodal sources of the acoustic grid, and then calculating the acoustic propagation by means of the finite element method (FEM). The large-eddy simulation (LES) turbulence model is employed in unsteady flow computation to find the acoustic sources. The numerical results of the acoustic pressure for the pipelines with variable cross-sections are compared with the experimental data. It is found that they are in good agreement. It is indicated that after analyzing the distribution of the acoustic source magnitude in the suddenly-contracted pipeline, the proposed optimal models perform well for noise reduction.关键词
声学/流噪声/Lighthill声类比方程/有限元法/大涡模拟/湍流模型Key words
acoustics/flow-induced noise/Lighthill acoustic analogy/FEM/(large-eddy simulation) (LES)/turbulence model引用本文复制引用
赵威,彭旭,陈明,李奇..变截面管道流噪声数值计算[J].噪声与振动控制,2016,36(3):48-51,150,5.
