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x-uB+m G'Y)w

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Author:

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ZHAO Xiao-li[1] SUN Zhen-xu[2]

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^,w W#Y%?3E_-[~}0School of Aerospace,Tsinghua University,Beijing,ChinaState Key Laboratory for Turbulence and Complex Systems,College of Engineering,Peking University,Beijing,China水利论文?&B%wo3MxV

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水动力学研究与进展B辑

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(_-lt~%_,ec*@C,M0JOURNAL OF HYDRODYNAMICS

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2010, 22(5)水利论文0?[)U+X{ S^8v

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Keywords:水利论文map(MVju.F

4?6lt5d i+Wv1P0trains passing by each other水利论文p5YHD SH/G/U

|!E LzbBZ%tX0rotational symmetry

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dynamic mesh

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7gf5p4FgL T,t9x0pressure wave

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[\5UjeC,Ad0TWO 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

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