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| 1 | Numerical study on the restriction speed of train passing curved rail in cross wind显示文摘The results of numerical investigations of aerodynamic forces and moment coefficients of flow passing a simplified train geometry under different wind speeds are summarized. To compute numerically the different coefficients, the three-dimensional Reynolds-Averaged Navier-Stokes (RANS) equations, combined with the k-ε turbulence model, were solved using finite volume technique. The pres-sure-velocity fields were coupled using the SIMPLE algorithm. At each iteration the pressure correction was obtained by solving a velocity divergence-derived Poisson-like equation. With the computed aerodynamic forces, the formula of the restriction speed at which the train passed curved rail in cross wind was deduced to analyse the influences of aerodynamic forces on the restriction speed. Results of numerical investigations showed that aerodynamic lift and overturn moment increased more and more rapidly with train speed and wind speed. The enhancement trends showed nonlinear phenomena and enhanced risk in the course of train movement. When the train travels at a high speed and encounters a huge cross wind, the influence involved by nonlinear risk increment will extremely impair safety of train. The following conclusion can also be drawn: The effect of aerodynamic lift makes restriction speed reduce, however, the influences of aerodynamic drag to the limit train speed rest on the direction of wind flow. When the wind blows from inner rail to outer rail, aerodynamic forces shall reduce the restriction speed, by contraries, when the wind blows from outer rail to inner rail, aerodynamic forces shall increase the restriction speed. | CHEN RuiLin ZENG QingYuan ZHONG XinGu XIANG Jun GUO XiaoGang ZHAO Gang | 2009 | Science China(Technological Sciences)2009，52，7： | 8 |
| 2 | Creative industry clusters in Shanghai:a success story显示文摘 | Justin O'Connor XinGu | 2014 | International Journal of Cultural Policy2014，，： | 1 |
| 3 | Synthesis and properties of rubber /organomontmorillonite hybrid nanocomposite显示文摘 | Wang Shengjie Long Chengfen Wang Xingu | 1998 | J Appl Polym Sci1998，69，5： | 1 |
| 4 | Modulation of atomic-layer-deposited A1203 film passivation of silieonsurface by rapid thermal processing 显示文摘 | Dong Lei XuegongYu Lihui Song XinGu Genhu Li Deren Yang | 2011 | Applied Physies Letters2011，99，： | 1 |
| 5 | Equations for the soil-water characteristic curve 显示文摘 | Fredlund D G and Anqing Xingu | 1994 | Canadian Geotech- nieal Journal1994，，31： | 1 |
| 6 | Effects of SCH23390 and spiperone administered into medial striatum and intermediate medial mesopallium on rewarding effects of morphine in day-old chicks显示文摘 | Xingu He Lin Xiao Nan Sui | 2009 | European Journal of Pharmacology2009，，1： | 1 |
| 7 | Weakening effect of vertical prestress ducts on web sections in prestressed concrete box girder bridges显示文摘Based on experimental study result of two simply supported beams,which were prestressed by vertical tendons,the research on the weakening effect of vertical prestress ducts on web sections of prestressed concrete box girder was carried out. The test result shows that in the condition without grouting into the ducts,the cracking load is evidently lower than that with full grouting,and stirrup stress and principal tension stress at the surface of concrete will increase obviously. Meanwhile,the finite element analysis has been done to the test beams. The research is consistent with the analysis of finite element. The research tells that strengthening the detection and management for the vertical prestress grouting quality have an important meaning to prevent cracking of the prestressed concrete box girder bridge and provide one theoretical and testing basis for analyzing the cracking reason of such bridges. | Shen Mingyan Zhong Xingu Yin Xuwen Shu Xiaojuan | 2010 | Engineering Sciences2010，8，2： | 0 |
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