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http://dx.doi.org/10.6112/kscfe.2012.17.4.049

3D GEOMETRY EFFECTS ANALYSIS ON PROPAGATION OF PRESSURE WAVE GENERATED BY HIGH-SPEED TRAIN TRAVELING IN A TUNNEL USING CFD  

Shin, D.Y. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Lee, S.G. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Oh, H.J. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Kim, H.G. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Yoon, S.H. (Korea Railraod Research Institute)
Kim, C.J. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Publication Information
Journal of computational fluids engineering / v.17, no.4, 2012 , pp. 49-55 More about this Journal
Abstract
Research has importance in proposing the design of a tunnel with a vertical vent to secure passengers in a comfortable environment and safe against pressure. Using several analysis methods, the magnitude of the pressure induced by the vertical vent in the tunnel can be analyzed. In addition to the 3-dimensional method, the 2-dimensional method and the 2-dimensional axis-symmetric method are also used to analyze the strong and weak points of each so that the optimum analysis method can be obtained. As a result, it appears that the 2-dimensional axis-symmetric method is the most suitable in analyzing tunnel pressure consider to accuracy and time effective aspect. Also, the 3-dimensional method is disadvantageous in that it takes longer in calculating results, but is more effective in predicting phenomena around the vertical vent in the tunnel.
Keywords
CFD; Unsteady Flow; High speed train; Tunnel;
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