Large eddy simulation of aerodynamic noise for a single circular cylinder under different boundary conditions

XU Jianlin; GONG Peilin; ZHANG Chunbo; JIA Yongxing; LI Rui; YANG Yonggang

doi:10.7638/kqdlxxb-2023.0199

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Large eddy simulation of aerodynamic noise for a single circular cylinder under different boundary conditions

更新时间：2026-05-28

- Large eddy simulation of aerodynamic noise for a single circular cylinder under different boundary conditions
- Vol. 42, Issue 12, Pages: 78-87(2024)
- 作者机构：
  
  1. 兰州交通大学机电工程学院,兰州,730070
  2. 西南交通大学机械工程学院,成都,610031
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2023.0199
  CLC： O42;O422.82.8
- Published：2024
- 稿件说明：
移动端阅览
许建林, 公沛霖, 张春博, 等. 不同边界条件下单圆柱气动噪声大涡模拟研究[J]. 空气动力学学报, 2024, 42(12): 78−87.

XU Jianlin, GONG Peilin, ZHANG Chunbo, et al. Large eddy simulation of aerodynamic noise for a single circular cylinder under different boundary conditions[J]. 2024, 42(12): 78-87.
许建林, 公沛霖, 张春博, 等. 不同边界条件下单圆柱气动噪声大涡模拟研究[J]. 空气动力学学报, 2024, 42(12): 78−87. DOI： 10.7638/kqdlxxb-2023.0199

XU Jianlin, GONG Peilin, ZHANG Chunbo, et al. Large eddy simulation of aerodynamic noise for a single circular cylinder under different boundary conditions[J]. 2024, 42(12): 78-87. DOI： 10.7638/kqdlxxb-2023.0199.

摘要

为研究边界条件对三维非定常单圆柱绕流湍流气动噪声的影响，采用大涡模拟并结合Ffowcs Williams and Hawkings 声类比方法，对单圆柱近、远场气动噪声辐射特性进行了数值模拟。通过对入流面、出流面、展向侧面以及垂向顶/底面设置不同的边界条件组成 4种计算工况，数值模拟结果与文献试验结果比较分析得到：当计算域的入流面、出流面和展向侧面的边界条件设为自由流，而垂向顶面和底面为充分发展的周期性边界时，能够较好地预测声压级频率及其对应峰值，与试验结果吻合较好。进一步分析表明，与其他3种工况的边界条件相比，计算域的入流面、出流面和展向侧面为自由流边界，即流向与展向边界上无声反射的边界条件更适合用于此类气动噪声的数值模拟。本文结论为类圆柱体、多圆柱体或更加复杂的各种柱体结构气动噪声数值模拟提供了一种可行的边界条件设置方法。

Abstract

To investigate the influence of boundary conditions on the aerodynamic noise of three-dimensional unsteady flow around a single circular cylinder

numerical simulations are conducted to investigate the radiated characteristics of near-field and far-field aerodynamic noise from a single circular cylinder under four different sets of boundary conditions based on the large eddy simulation (LES) and Ffowcs Williams Hawkings (FW-H) acoustic analogy. Comparison between the numerical simulation results of benchmark cases and the experimental results in the literature indicates that setting the boundary conditions of the inflow face

outflow face

and spanwise sides as free flow

while the vertical top and bottom surfaces as fully developed periodic boundaries

allows for a better prediction of the Sound Pressure Level (SPL) frequency and its corresponding peaks

showing good agreement with the experimental results. Further analysis reveals that

compared to the other three cases with different boundary conditions

setting the inflow face

outflow face

and spanwise sides of the computational domain as free flow boundaries

where there are no sound reflections along the flow and spanwise directions

is more suitable for numerical simulations of this type of aerodynamic noise. The conclusion of this study provides a feasible boundary condition setting for the numerical simulation of aerodynamic noise from cylindrical structures

multiple cylinders

or even more complex configurations.

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references

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