Large-eddy simulation of circular cylinder flow at subcritical Reynolds number: Turbulent wake and sound radiation
查看参考文献25篇
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文摘
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The flows past a circular cylinder at Reynolds number 3900 are simulated using large-eddy simulation (LES) and the far-field sound is calculated from the LES results. A low dissipation energy-conserving finite volume scheme is used to discretize the incompressible Navier– Stokes equations. The dynamic global coefficient version of the Vreman's subgrid scale (SGS) model is used to compute the sub-grid stresses. Curle's integral of Lighthill's acoustic analogy is used to extract the sound radiated from the cylinder. The profiles of mean velocity and turbulent fluctuations obtained are consistent with the previous experimental and computational results. The sound radiation at far field exhibits the characteristic of a dipole and directivity. The sound spectra display the -5/3 power law. It is shown that Vreman's SGS model in company with dynamic procedure is suitable for LES of turbulence generated noise. |
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来源
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Acta Mechanica Sinica
,2016,32(1):1-11 【核心库】
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DOI
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10.1007/s10409-015-0528-0
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关键词
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Flows past circular cylinder
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Aerodynamic noise
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Large-eddy simulation
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Unstructured grid
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Acoustic analogy
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地址
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1.
China Academy of Aerospace Aerodynamics, State Key Laboratory of Non-linear Mechanics, Beijing, 100074
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Institute of Mechanics, Chinese Academy of Sciences, State Key Laboratory of Non-linear Mechanics, Beijing, 100190
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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0567-7718 |
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学科
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力学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:5660703
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