| 高速列车穿越隧道时一维非定常流的数值研究 |
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| 引用本文： | 朱克勤 杨宇光. 高速列车穿越隧道时一维非定常流的数值研究[J]. 空气动力学学报, 1998, 16(4): 480-484 |
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| 作者姓名： | 朱克勤 杨宇光 |
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| 作者单位： | 清华大学 |
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| 摘 要： | 本文采用特征线方法，对高速列车穿越隧道时引起的一维非定常流动进行数值研究，在流动的控制方程中，对Ｋａｇｅ等人的能量方程进行了修正，以计入侧壁在径向运动时对气体做功，该修正一方面从理论上消除了能量方程与等熵假定间存在的不致性，另一方面，数值计算的结果表明，侧壁径向运动时气体做功的影响在本项研究中是不能被忽略的。
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| 关 键 词： | 高速列车 隧道 一维 非定常流 特征线方法 |
Numerical Study on an Unsteady One Dimensional Flow Produced by High Speed Trains Passing a Tunnel |
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| Zhu Keqin Yang Yuguang. Numerical Study on an Unsteady One Dimensional Flow Produced by High Speed Trains Passing a Tunnel[J]. Acta Aerodynamica Sinica, 1998, 16(4): 480-484 |
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| Authors: | Zhu Keqin Yang Yuguang |
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| Abstract: | The unsteady one dimensional flow produced by high speed trains passing a tunnel is studied numerically by using the method of characteristics.In order to include the work done by wall moving in radial direction and satisfy the isentropic assumption,the energy equation derived by Kage et al is corrected.The calculations based on the new energy equation shows that the effect of the work on the entry wave of the one dimensional flow in tunnel is not negligible. |
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| Keywords: | high speed train tunnel unsteady one dimensional flow characteristic method |
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