| 斜切式洞门缓冲结构开口率的优化分析 |
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| 引用本文： | 贺旭洲,王英学,付业凡,彭永利.斜切式洞门缓冲结构开口率的优化分析[J].空气动力学学报,2012(2):202-205. |
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| 作者姓名： | 贺旭洲 王英学 付业凡 彭永利 |
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| 作者单位： | 湖北省交通规划设计院;西南交通大学土木工程学院 |
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| 基金项目： | 铁道部科技研究开发计划(2008G031-13-1) |
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| 摘 要： | 采用数值分析方法中的动网格技术,对高速列车在突入顶部开口的斜切式洞门隧道的空气动力学问题进行了三维数值模拟。计算结果的分析表明:顶部开口的斜切式洞门缓冲结构降低首波压力峰值的效果不明显,降低压力梯度的效果明显,并且降低压力梯度的效果与速度有一定关系,在确定速度下,存在最优开口率。
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| 关 键 词： | 高速列车 隧道 缓冲结构 斜切式洞门 动网格 |
Bamboo-truncating portal hood optimization of aperture ratio analysis |
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| HE Xu-zhou,WANG Ying-xue,FU Ye-fan,PENG Yong-li.Bamboo-truncating portal hood optimization of aperture ratio analysis[J].Acta Aerodynamica Sinica,2012(2):202-205. |
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| Authors: | HE Xu-zhou WANG Ying-xue FU Ye-fan PENG Yong-li |
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| Institution: | 1(1.Communication Planning and Design Institute of Hubei Province,Wuhan Hubei 430051,China; 2.School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
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| Abstract: | Using dynamic mesh technology of numeral simulation method,the pressure wave transportation process,created when high-speed train passing through tunnel with ceiling opengings hood on bamboo-truncating portal,was simulated in three dimensions.The calculation result shows that hood with ceiling openings on bamboo-truncating portal does little favor for reducing peak-pressure,but has good effect on reducing peak-pressure gradient.And result also shows that the effect of tunnel hood reducing peak-pressure gradient relevant to the speed of train.On the determining speed,there is optimum aperture ratio. |
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| Keywords: | high-speed train tunnel hood bamboo-truncating portal dynamic mesh |
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