A NEW METHOD FOR NUMERICAL SIMULATION OF TWO TRAINS PASSING BY EACH OTHER AT THE

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Abstract:A new method is proposed to numerically simulate problems of trains passing by each other at the same speed,and is implemented in UDF language of commercial software Fluent.Because only a half of the computational domain is required and the dynamic mesh technique is avoided,the computational efficiency is greatly improved.A two-dimensional test case is used for validation,which shows that the flow field and the pressure wave during the train-passing events can be correctly calculated by this new method.This method can be easily extended to three-dimensional simulations,to deal with practical problems.水利论文4]r On r"|O

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ZHAO Xiao-li[1] SUN Zhen-xu[2]水利论文4w-`M+f};w!Ad i

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School of Aerospace,Tsinghua University,Beijing,ChinaState Key Laboratory for Turbulence and Complex Systems,College of Engineering,Peking University,Beijing,China

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水动力学研究与进展B辑

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JOURNAL OF HYDRODYNAMICS

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trains passing by each other水利论文 _9Vju(|m9jv

6oPm(g qN,v2z)f7_0rotational symmetry

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TWO NUMERICAL SIMULATION computational efficiency new method problems pressure wave flow field test case practical deal with software required language extended dynamic during domain mesh UDF水利论文;P}mip3b+B

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