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JMT 2012, Vol. 20 Issue (2) :115-120    DOI: 10.3969/j.issn.2095-087X.2012.02.010
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Aerodynamic simulation of evacuated tube maglev trains with different streamlined designs
Xuyong CHEN, Lifeng ZHAO, Jiaqing MA, Yuansen LIU*
Key Laboratory of Magnetic Levitation Technologies and Maglev Trains (Ministry of Education of China), Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, China

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Abstract Based on the Navier-Stokes (N-S) equations of incompressible viscous fluids and the standard k-ε turbulence model with assumptions of steady state and two dimensional conditions, a simulation of the aerodynamic drag on a maglev train in an evacuated tube was made with ANSYS/FLOTRAN software under different vacuum pressures, blockage ratios, and shapes of train head and tail. The pressure flow fields of the evacuated tube maglev train under different vacuum pressures were analyzed, and then compared under the same blockage ratio condition. The results show that the environmental pressure of 1000 Pa in the tube is the best to achieve the effect of aerodynamic drag reduction, and there are no obvious differences in the aerodynamic drag reduction among different streamline head shapes. Overall, the blunt-shape tail and the blockage ratio of 0.25 are more efficient for drag reduction of the train at the tube pressure of 1000 Pa.
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Xuyong CHEN
Lifeng ZHAO
Jiaqing MA
Yuansen LIU
Keywordsaerodynamic drag   evacuated tube maglev train   blockage ratio   train head and tail     
Received 2012-05-18;
Fund:

This work was supported by the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) of the Ministry of Education of China (IRT0751); the National High Technology Research and Development Program of China (863 program: 2007-AA03Z203); the National Natural Science Foundation of China (Grant Nos. 50588201and 50872116); the Research Fund for the Doctoral Program of Higher Education of China (SRFDP200806130023); and the Fundamental Research Funds for the Central Universities (SWJTU-09BR152, SWJTU09ZT24, and SWJTU11CX073).

Cite this article:   
Xuyong CHEN, Lifeng ZHAO, Jiaqing MA, Yuansen LIU.Aerodynamic simulation of evacuated tube maglev trains with different streamlined designs[J]  JMT, 2012,V20(2): 115-120
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http://jmt.swjtu.edu.cn/EN/10.3969/j.issn.2095-087X.2012.02.010      or     http://jmt.swjtu.edu.cn/EN/Y2012/V20/I2/115
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