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| ANALYSIS OF TRANSIENT PRESSURE INDUCED BY HIGH- SPEED TRAIN PASSING A TUNNEL BASED ON THE SECOND DEVELOPMENT OF FLUENT |
| ZHANG Zhao-jie, GAO Bo, ZHENG Chang-qing, WANG Ying-xue |
| School of Civil Eng., Southwest Jiaotong University |
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Abstract Research purpose: Based on the second development of Fluent which is a powerful CFD analysis software, some important techniques are discussed on the problems in numerical simulation of aerodynamic effect produced by high-speed train passing a tunnel on Fluent system. The problems can be solved by the method of programming with VC++.
Research method: This paper presents a cell-centered finite volume scheme for numerical integration of Navier-Stokes equations for three -dimensional unsteady viscous compressible non -homentropic flow to simulate the variation of transient pressure in tunnel, inside and outside the train introduced by high -speed train passing through a tunnel.
Research result: The transient pressure curve is analysed and explained in detail in accord with the train positions.
Research conclusion: The calculated results are useful in designing new -style portals of high -speed railway tunnels and vehicle sealing performance of high-speed train.
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Received: 11 April 2005
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2005, Vol. 22 
