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

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R/Ygc6[ g!jV!r0A NEW METHOD FOR NUMERICAL SIMULATION OF TWO TRAINS PASSING BY EACH OTHER AT THE SAME SPEED

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)Q@7RKt3@0Abstract: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.

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w;dxS%SC0ZHAO Xiao-li[1] SUN Zhen-xu[2]水利论文}jl3Fw&K(l(K

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kBNE$G|.N;U~0School of Aerospace,Tsinghua University,Beijing,ChinaState Key Laboratory for Turbulence and Complex Systems,College of Engineering,Peking University,Beijing,China水利论文$Y&{wl$bewU

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期 刊:

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3d `!qj1Nuy?T0水动力学研究与进展B辑

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2010, 22(5)

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分类号:

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TV13

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Keywords:水利论文fR|J@d`7aR8g1Ovc

G#Nb a`EM1_0trains passing by each other水利论文1E{Q8n*W/|

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rotational symmetry

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1V%Ni/[s h0dynamic mesh

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pressure wave

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u.Z XPj7hx?#bd0TWO 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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基金项目:

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