Projects(U1134203,51575538)supported by the National Natural Science Foundation of China;Project(2014T001-A)supported by the Technological Research and Development Program of China Railways Corporation;Project(2015ZZTS210)supported by the Fundamental Research Funds for the Central South Universities of China
Using three-dimensional, unsteady N-S equations and k-ε turbulence model, the effect of ambient wind on the pressure wave generated by a high-speed train entering a tunnel was studied via numerical simulation. Pressu...
Projects(U1334205,U1134203)supported by the National Natural Science Foundation of China;Project(132014)supported by the Fok Ying Tong Education Foundation,China;Projects(2014T001-A,2015T002-A,2015J007-N)supported by China Railways Corporation
This work used the computational fluid dynamics method combined with full-scale train tests to analyze the train aerodynamic performance on special slope topography. Results show that with the increment in the slope g...
Projects(51075401,U1134203,U1334205)supported by the National Natural Science Foundation of China;Project(NCET-10-083)supported by the Program for New Century Excellent Talents in University of Ministry of Education,China;Project(2013J004-8)supported by the Science and Technology Research and Development Program of China Railway Corporation
The influence of ribs on the train aerodynamic performance was computed using detached eddy simulation(DES), and the transient iteration was solved by the dual-time step lower-upper symmetric Gauss-Seidel(LU-SGS) meth...
Project(U1134203)supported by the National Natural Science Foundation of China
According to the analysis of the turbulent intensity level around the high-speed train, the maximum turbulent intensity ranges from 0.2 to 0.5 which belongs to high turbulent flow. The flow field distribution law was ...
Project(U1134203)supported by the Major Program of the National Natural Science Foundation of China;Project(51105384)supported by the National Natural Science Foundation of China
Research on the distribution of smoke in tunnels is significant for the fire emergency rescue after an operating metro train catches fire. A dynamic grid technique was adopted to research the law of smoke flow diffusi...