Generalized form of interpolation-supplemented lattice Boltzmann method for computational aeroacoustics

被引：0
|
作者：
Liu W.-H. [1 ]
Chen R.-Q. [1 ,2 ]
Qiu R.-F. [1 ]
Lin W. [1 ]
You Y.-C. [1 ]
机构：
[1] School of Aerospace Engineering, Xiamen University, Xiamen
[2] Key Laboratory of Aerodynamic Noise Control, China Aerodynamics Research and Development Center, Mianyang
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 08期
关键词：
Aeroacoustics; Cylinder noise; Generalized form of interpolation-supplemented lattice Boltzmann method; Lattice Boltzmann method; Non-uniform mesh;
D O I：
10.3785/j.issn.1008-973X.2020.08.024
中图分类号：
学科分类号：
摘要：
The generalized form of interpolation-supplemented lattice Boltzmann method (GILBM) was proposed for aeroacoustics simulation on non-uniform meshes. The correctness of GILBM code was validated by simulating the lid-driven cavity flow and the low Reynolds number cylinder flow. On this basis, this method was applied to simulate the Gaussian pulse propagation, acoustic periodic point sources and aerodynamic noise of two-dimensional cylinder flow. Results show that the propagation process of Gaussian pulse and acoustic periodic point sources can be well simulated on non-uniform meshes by GILBM, and the simulation results are in good agreement with the analytical solution. Also, the generation and propagation of the aerodynamic noise produced by the vortex shedding generated by a cylinder can be simulated on non-uniform body-fitted mesh by GILBM, and the sound pressure propagation in the near field and the far field can be well captured. The aerodynamic noise characteristics of flow around a cylinder show a dipole pattern. Results present a good agreement with the references, which confirms the correctness and the feasibility of GILBM in simulating sound propagation problems and aerodynamic noise on non-uniform meshes. Copyright ©2018 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：1637 / 1644
页数：7
相关论文
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