| 车端间距对高速列车风挡气动噪声的影响 |
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| 引用本文： | 刘加龙,余飞. 车端间距对高速列车风挡气动噪声的影响[J]. 电力机车与城轨车辆, 2021, 0(1): 60-63 |
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| 作者姓名： | 刘加龙 余飞 |
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| 作者单位： | ;1.中车青岛四方机车车辆股份有限公司 |
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| 摘 要： | 为研究车端间距对高速列车风挡气动噪声的影响,文章利用大涡模拟方法和Lighthill声学比拟理论建立高速列车风挡气动噪声数值计算模型,并设计四种不同车端间距下的风挡方案,计算相应的气动噪声。结果表明,风挡的气动噪声随着车端间距的增加而增大,在满足工程约束的条件下,可以通过减小车端间距来改善高速列车风挡的气动噪声。
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| 关 键 词： | 高速列车 风挡 车端间距 气动噪声 声压级 |
Influence of distance between vehicle ends on the aerodynamic noise of high speed train windshield |
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| LIU Jia-long,YU Fei. Influence of distance between vehicle ends on the aerodynamic noise of high speed train windshield[J]. Electric Locomotives & Mass Transit Vehicles, 2021, 0(1): 60-63 |
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| Authors: | LIU Jia-long YU Fei |
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| Affiliation: | (CRRC Qingdao Sifang Co.,Ltd.,Qingdao 266111,China) |
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| Abstract: | A numerical model of aerodynamic noise of high speed train windshield is established by using large eddy simulation method and Lighthill acoustic analogy theory,in order to study the influence of distance between vehicle ends on aerodynamic noise of high speed train windshield.Four schemes of windshield with different distance between vehicle ends are designed to calculate aerodynamic noise of different windshield.The result shows that the aerodynamic noise increases with the increase of the distance between vehicle ends,and the aerodynamic noise of high speed train windshield can be improved by reducing the distance between vehicle ends under the condition of satisfying the engineering constraints. |
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| Keywords: | high speed train windshield distance between vehicle ends aerodynamic noise sound pressure level |
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