| 高速列车车身表面气动噪声源研究 |
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| 引用本文： | 刘加利,张继业,张卫华.高速列车车身表面气动噪声源研究[J].铁道车辆,2010,48(5). |
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| 作者姓名： | 刘加利 张继业 张卫华 |
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| 作者单位： | 西南交通大学,牵引动力国家重点实验室,四川,成都,610031 |
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| 基金项目： | 铁道部科技研究开发计划项目，国家自然科学基金 |
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| 摘 要： | 介绍了计算气动噪声源的宽频带噪声源模型,建立了高速列车三维绕流流动的物理数学模型,数值模拟了在不同运行速度下高速列车在平地、路堤和高架桥上的外部流场,进而利用宽频带噪声源模型对车身表面气动噪声源进行了计算。计算结果表明,3种运行工况下车身表面噪声源的分布规律很相似,而且随着列车运行速度的提高,列车车身声功率及表面声功率都显著增加,因此,降低气动噪声对发展高速列车至关重要。
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| 关 键 词： | 高速列车 气动噪声 噪声源 宽频带噪声源模型 |
Research on the Aerodynamic Noise Source on Surface of High Speed Trains |
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| LIU Jia-li,ZHANG Ji-ye,ZHANG Wei-hua.Research on the Aerodynamic Noise Source on Surface of High Speed Trains[J].Rolling Stock,2010,48(5). |
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| Authors: | LIU Jia-li ZHANG Ji-ye ZHANG Wei-hua |
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| Institution: | LIU Jia-li,et al.(raction Power State Key Laboratory of Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | The model of broadband noise source in calculation of aerodynamic noise source is described.The physical mathematics model of the three-dimensional flow of high speed trains is set up.The external flow fields of high speed trains on level ground,embankment and viaducts at different operation speeds are simulated digitally,and the model of broadband noise source is used to make the calculation of the aerodynamic noise source on surface of the train.The calculation result shows that the distribution patterns ... |
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| Keywords: | high speed train aerodynamic noise noise source model of broadband noise source |
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