高速铁路火车流场分析(王伟辉; 辛敬业)

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【作者】王伟辉; 辛敬业 【作者单位】台湾海洋大学水利论文?.U F W(t r#IG`%T

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【论文摘要】 本研究将介绍对于高速铁路火车流体分析的方法与计算结果,并由流体力学计算的结果,分析车头与集电弓罩的噪音问题.对于噪音的预测,应用数值方法在计算时间与计算资源的需求上都相当大,本研究将不直接计算噪音,而是应用数值方法计算集电弓罩与车体整合之流场,由此判定如何由改变集电弓或集电弓罩之几何以改进流场状况,进而改善其所产生之噪音。由计算结果,对于可能的集电弓罩几何建议为集电弓罩应维持间隙,采取较为椭圆的造型,并采取适当的集电弓罩架形长度。

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【英文论文摘要】 In this paper,the computations of flow field around the high speed train pantograph cover will be described.The flow filed will be analyzed for the noise predictions.To predict the flow noise by using the computational aeroacoustics method requires large computational time and resources, and the possible noise generated by the high speed train pantograph cover will be identified by the computed flow field in this paper instead.The geometry of pantograph cover will then be modified to improve the acoustics.The conclusions from the computational results are that a gap should exist along the cover,and an elliptical shape cover is better for the acoustics.The extension of the pantograph cover should also be carefully determined.水利论文x a[I-iE$n

n$Bw]R0【论文关键词】 计算流力; RANS; 高速铁路火车; 集电弓罩; 噪音
4vq"\+Y6C]u\0F0【英文论文关键词】 CFD; RANS; high speed train; pantograph cover; flow noise水利论文0Y.Fi`Eb#O;T

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TAG: 流场 高速铁路 王伟辉 辛敬业 火车
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