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Abstract: In order to study the unsteady aerodynamics effects in railway tunnels, the 3D Reynolds average Navier-Stokes equations of a viscous compressible fluid are solved, and the two-equation k-ε model is used in the simulation of turbulence, while the dynamic grid technique is employed for moving bodies. We focus on obtaining the changing tendencies of the aerodynamic force of the train and the aerodynamic pressures on the tunnel wall and train surface, and discovering the relationship between the velocity of the train and the intensity of the micro pressure wave at the tunnel exit. It is shown that the amplitudes of the pressure changes in the tunnel and on the train surface are both approximately proportional to the square of the train speed, so are the microwave and the drag of the train.

[1]Anthoine, J., 2009. Alleviation of pressure rise from a high-speed train entering a tunnel. AIAA Journal, 47(9):2132-2142.

[2]Ferzieger, J.L., Peric, M., 1996. Computational Methods for Fluid Dynamics. Springer-Verlag, Heidelberg, p.265-328.

[3]Iida, M., Kikuchi, K., Fukuda, T., 2006. Analysis and experiment of compression wave generated by train entering tunnel entrance hood. JSME International Journal Series B, 49(3):761-770.

[4]Joseph, A.S., 2001. Aerodynamics of high-speed trains. Annual Review of Fluid Mechanics, 33(3):371-414.

[5]Li, R.X., Zhao, J., Liu, J., Zhang, W.H., 2010. Influence of air pressure pulse on side windows of high-speed trains passing each other. Chinese Journal of Mechanical Engineering, 46(4):87-98 (in Chinese).

[6]Liu, T.H., Tian, H.Q., Liang, X.F., 2010a. Aerodynamic effects caused by trains entering tunnels. Journal of Transportation Engineering, 136(9):846-853.

[7]Liu, T.H., Tian, H.Q., Liang, X.F., 2010b. Design and optimization of tunnel hoods. Tunnelling and Underground Space Technology, 25(3):212-219.

[8]Luo, J.J., Gao, B., Wang, Y.X., Zhao, W.C., 2004. Numerical simulation of unsteady three dimensional flow induced by high-speed train entering tunnel with shaft. Journal of Southwest Jiaotong University, 39(4):442-446 (in Chinese).

[9]Mei, Y.G., Zhao, H.H., Liu, Y.Q., 1995. Numerical analysis about pressure wave of high-speed train. Journal of Southwest Jiaotong University, 30(6):667-672 (in Chinese).

[10]Ogawa, T., Fujii, K., 1997. Numerical investigation of three-dimensional compressible flows induced by a train moving into a tunnel. Computers & Fluids, 26(6):565-585.

[11]Ricco, P., Baron, A., Molteni, P., 2007. Nature of pressure waves induced by a high-speed train travelling through a tunnel. Journal of Wind Engineering and Industrial Aerodynamics, 95(8):781-808.

[12]Sato, T., Sassa, T., 2005. Prediction of the compression pressure wave generated by a high-speed train entering a tunnel. International Journal of Computational Fluid Dynamics, 19(1):53-59.

[13]Tanaka, Y., Iida, M., Kikuchi, K., 2003. Method to simulate generation of compression wave inside a tunnel at train entry with a simple geometry model. Transactions of the Japan Society of Mechanical Engineers Series B, 69(683):1607-1614 (in Japanese).

[14]Tian, H.Q., 2007. Train Aerodynamics. China Railway Publishing House, Beijing, China, p.268-303 (in Chinese).

[15]William-Louis, M., Tournier, C., 2005. A wave signature based method for the prediction of pressure transients in railway tunnels. Journal of Wind Engineering and Industrial Aerodynamics, 93(6):521-531.

[16]Woods, W.A., Pope, C.W., 1979. On the Range of Validity of Simplified One Dimensional Theories for Calculating Unsteady Flows in Railway Tunnels. The 3rd International Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels, Sheffield, UK, p.115-150.

[17]Zhao, J., Li, R.X., 2009. Numerical analysis of aerodynamics of high-speed trains running into tunnels. Journal of Southwest Jiaotong University, 44(1):96-100 (in Chinese).

[18]Zhao, W.C., Gao, B., Wang, Y.X., 2006. Numerical investigation of micro pressure wave radiated from the exit of a railway tunnel. Journal of Basic Science and Engineering, 14(3):444-453 (in Chinese).