| 串列双圆柱绕流的气动噪声特性分析 |
| 投稿时间：2018-05-29 修订日期：2018-06-16 点此下载全文 |
| 引用本文：高威,陈国勇.串列双圆柱绕流的气动噪声特性分析[J].计算机辅助工程,2018,27(4):41-46. |
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| 中文摘要:在OpenFOAM求解器中采用改进型延迟分离涡模拟(improved delayed detached eddy simulation，IDDES)方法对串列双圆柱的绕流流场进行数值模拟，使用K FWH方程分析其气动噪声特性，比较不同来流速度、圆柱间距比和圆柱直径的双圆柱绕流的气动噪声特性。分析结果表明：来流速度、圆柱间距比和圆柱直径对串列双圆柱的气动噪声特性都有显著影响，在特定情况下还会出现冲击纯音噪声、高分贝噪声等声品质恶化现象。 |
| 中文关键词:串列双圆柱 改进型延迟分离涡模拟 K FWH 气动噪声 |
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| Characteristic analysis on aerodynamical noise of flow around tandem double cylinders |
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| Abstract:The numerical simulation on flow field around tandem double cylinders is carried out using improved delayed detached eddy simulation (IDDES) method in OpenFOAM solver. The aerodynamic noise characteristic is analyzed by K FWH equation. The aerodynamic noise characteristics under different flow velocity, different cylinder distance diameter ratio and different cylinder diameter are compared with each other. The analysis results show that the flow velocity, cylinders distance diameter ratio and cylinder diameter have obvious influence on the aerodynamic noise characteristic of the tandem double cylinders. In a particular case, there will be sound quality deterioration, such as pure tone noise, high decibel noise and so on. |
| keywords:tandem double cylinders IDDES K-FWH aerodynamic noise |
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