Analysis of Dynamic Wind of Sound Barrier under High Speed Train

Abstract:

The special dynamic pulsating air pressure acting on the surface of sound barrier can be aroused by passing high speed train, making sound barrier structure and components prone to destruction and other issues. Based 3-D unsteady k-ε two-equation turbulent model, dynamic processes of high-speed trains passing the sound barrier region at different speeds and many factors are simulated and analyzed by using moving mesh finite volume method. The results of dynamic numerical calculated pulsating air pressure results and the effecting rule of various parameters were obtained, and compared with the measured data. It is showed that the air pressure value increases with the increasing train speed and the dynamic numerical calculated pulsating air pressure curves shape and effecting rule of parameters are all well matched with the measured data, but the air pressure value is slightly larger. At last, based on the results of numerical calculation, the addition of static air pressure value caused by high speed train is put forward.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1536-1542
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1536
• Online since: August 2013
• Authors: Zhou Shi*, Jun Li Guo, Wei Feng Su, Shuang Yang Zhang
• Keywords: High-Speed Railway (HSR), Numerical Calculation, Pulsating Wind Pressure, Sound Barrier

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