| 引用本文: | 梁习锋,田红旗,邹建军.动力车纵向气动力风洞试验及数值模拟.[J].国防科技大学学报,2003,25(6):101-105.[点击复制] |
| LIANG XiFeng,TIAN Hongqi,ZOU JianJun.The Wind Tunnel Test and Numerical Simulation of Longitudinal Aerodynamic Force of the Traction Car[J].Journal of National University of Defense Technology,2003,25(6):101-105[点击复制] |
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| 动力车纵向气动力风洞试验及数值模拟 |
| 梁习锋1, 田红旗1, 邹建军2 |
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(1.中南大学 高速列车研究中心，湖南 长沙 470015;2.国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 采用风洞试验（在地板抽吸和不抽吸情况下）和数值模拟计算对200km/h动力集中型电动旅客列车组动力车纵向气动力进行了研究，得到了动力车作为头、尾车的纵向气动力系数。结果表明，地板抽吸后，头、尾车空气阻力均有明显增加，头车负升力增加，尾车正升力减少；动力车头、尾两车联挂时底部空气阻力占总的空气阻力的25.9%，列车减阻的重点在车体底部空气阻力。 |
| 关键词: 动车组 风洞试验 数值计算 |
| DOI： |
| 投稿日期：2002-12-20 |
| 基金项目:铁道部科技发展计划项目 |
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| The Wind Tunnel Test and Numerical Simulation of Longitudinal Aerodynamic Force of the Traction Car |
| LIANG XiFeng1, TIAN Hongqi1, ZOU JianJun2 |
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(1.High Speed Train Research Centre, Central South University, Changsha 410075, China;2.College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The wind tunnel tests (in the case of suction plate and normal plate) and numerical simulations of longitudinal aerodynamic force of the 200km/h EMU's traction car are performed, and the longitudinal aerodynamic force coefficients are obtained respectively when the traction car is the front and rear one. The results show that, in the case of suction plate, the aerodynamic drag of the front car and the rear car increase evidently, and the negative lift of the front car increases while the positive lift of the rear decreased; the aerodynamic drag of the sub-floor contributes to the total drag by 25.9 percent. So to decrease drag the emphasis is the sub-floor. |
| Keywords: EMUs wind tunnel test numerical simulation |
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