高速列车受电弓平台的优化设计
Optimal Design of Pantograph Platform for High-Speed Trains
摘要:
为了研究高速列车受电弓平台对受电弓系统的气动阻力影响，本文设计了六种不同形式的受电弓平台，采用计算流体力学中IDDES (improved delayed detached eddy simulation)方法研究了受电弓系统区域的流动特性、气动阻力特性。研究结果表明：高速列车受电弓区域存在强烈的旋涡运动；外置式无下沉结构的受电弓平台导致整个受电弓系统的气动力增大；在下沉高度确定的条件下，下沉式平台的拓扑形式对于气动力的影响很小。研究结果为高速列车受电弓平台的选型与设计提供了依据。
Abstract:
In order to study the aerodynamic impact of pantograph platform on the pantograph system, six different pantograph platforms were designed, and the flow characteristics and aerodynamic drag characteristic of pantograph system were studied by IDDES (improved delayed detached eddy simulation) in computational dynamics. The results show that there is a strong vortex in the pantograph region, the external type of pantograph platform causes increase of the aerodynamic force of the pantograph system; under the condition that the sinking height is determined, the topology of the sinking platform has little influence on the aerodynamic forces of the pantograph system. The research results provide the basis for the selection and design of the pantograph platform for high-speed trains.
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