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- W2365361819 abstract "Under the effect of crosswind,there exists obvious mutual airflow interaction between high- speed trains and the bridge,which would augment the probability of train accident. In order to estimate the mutual effect,the aerodynamic behavior of high- speed vehicles and 32 m span simply- supported beam bridges was investigated with large- scale computational fluid dynamics software Fluent applying three- dimensional,steady,incompressible Navier- Stokes equations and carefully selected Realizable k- e turbulent model. Thereinto, wind tunnel experiment was conducted to simulate the crosswind with corresponding parameters- uniform wind being 0°attack angle and 90°angle of wind deflection. The results show that the wind velocities in the range of 5- 25 m / s have insignificant impact on the aerodynamic coefficient. When the bridge is under the disturbance of trains,the drag coefficients increases while the lift coefficients and overturning moment coefficients( call moment coefficients for short) decrease. Meanwhile,the magnitude of drag coefficients,lift coefficients and moment coefficients of trains gained on the bridge is greater than those derived on flat ground,which shows less security of trains moving on the bridge." @default.
- W2365361819 created "2016-06-24" @default.
- W2365361819 creator A5015799796 @default.
- W2365361819 date "2014-01-01" @default.
- W2365361819 modified "2023-09-23" @default.
- W2365361819 title "Three-dimensional numerical simulation analysis of high-speed train and 32 m simply-supported beam bridge under crosswind" @default.
- W2365361819 hasPublicationYear "2014" @default.
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