Aerodynamic Characteristics Analysis of High-Speed Train on Cutting under Crosswinds

Abstract:

Cutting is an effective device to reduce crosswind loads acting on trains. The cutting depth, width and gradient of slope are important factors for design and construction of cutting. Based on numerical analysis methods of three-dimensional viscous incompressible aerodynamics equations, aerodynamic side forces and yawing moments acting on the high-speed train, with different depths and widths of cutting，are calculated and analyzed under crosswinds，meanwhile the relationship of the gradient of cutting slope and transverse aerodynamic forces acting on trains are also studied. Simulation results show that aerodynamic side forces and yawing moments acting on the train（the first, middle and rear train）decrease with the increase of cutting depth. The relationship between transverse forces (moments) coefficients acting on the three sections and the cutting depth basically is the three cubed relation. The bigger is cutting width，the worse is running stability of train. The relationship between yawing moments coefficients acting each body of the train and the cutting width approximately is the three cubed relation. The transverse Aerodynamic forces decreased gradually with the increase of the gradient of cutting slope, the relationship between yawing moments coefficients acting each body of the train and the gradient of cutting slope basically is the four cubed relation.

• Periodical: Applied Mechanics and Materials (Volumes 300-301)
• Pages: 62-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.300-301.62
• Online since: February 2013
• Authors: Kun Ye, Ren Xian Li
• Keywords: Crosswind, Cutting, High-Speed Train, Numerical Analysis

References

[1] JIANG Cui-xiang, LIANG Xi-feng. Effect of the vehicle aerodynamic performance caused by the height and position of wind-break wall [J]. China railway science, 2006, 27(2) : 66－70.

[2] TIAN Hong-qi. Aerodynamics of trains [M]. Beijing: China Railway Publishing House, (2007).

[3] Hoppm ann U, Koenig S, Tielkes T, et al. A short-term strong wind prediction model for railway application: Design and verification [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2002, 90(10): 1127-1134.

DOI: 10.1016/s0167-6105(02)00226-x

[4] Anderson H L. Investigation of the force on bluff bodies near the ground. M. Sc. dissertation, Department of Aeronautics, Imrperial College, (1997).

[5] Toshishige FUJII，Tatsuo MAEDA，Hiroaki ISHIDA，et al. Wind-induced accidents of Train/Vehicle and Their Measures in Japan. Quarterly Report of Railway Technical Research Institute，1999，40(1): 50~55.

[6] Suzuki M, Tanem oto K, Maeda T. Aerodynamic characteristics of train/vehicles under cross winds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91(1/2): 209-218.

DOI: 10.1016/s0167-6105(02)00346-x

[7] REN Zun-song, XU Yu-gong, WANG Lu-lei, et al. Study on the Running Safety of High-speed Trains under Strong Cross Winds［J］．Journal of the China Railway Society, 2006，28( 6) : 46 - 50.

[8] Hu Chang-hong. Windbreak Work for Subgrade at Turpan-Yuergou Section of Nanjiang Railway［J］．railway construction technology, 2006(4) : 56-58.

[9] XU Shi-jun. Study on capsizing stability of EMU in cross-wind [D]. Changsha: Central South University, (2009).

[10] HUANG Zun-di Research on Wind-Break Facilities of The Second Lanchow-Sinkiang Double-Line Railway[D]. Changsha: Central South University, (2010).

[11] YANG Bin, LIU Tang-hong, YANG Ming-zhi. Reasonable setting of wind-break wall on railway in strong wind areas [J]. Journal of railway science and engineering, 2011, 8 (3): 67—72.

[12] WANG Zhong-qiang, Aerodynamics performance of high-speed train on cutting [D]. Chengdu: Southwest Jiaotong University, (2011).

[13] ZHU Zi-qiang. Application of computational fluid dynamics [M]. Beijing: Beijing University of Aeronautics and Astronautics press, (1998).

[14] FEI Xiang-lin. Advanced fluid mechanics [M]. Xi'an: Xi'an Jiaotong University press, (1989).

[15] BI Hai-quan, LEI Bo, ZHANG Wei-hua. Numerical analysis on aerodynamic characteristics under crosswinds of MLX01 maglev trains [J]. Electric drive for locomotives, 2004(5): 23-26.