基于双向流固耦合的铁路客车水箱冲击分析

基于双向流固耦合的铁路客车水箱冲击分析 Impact analysis of railway passenger vehicle water tank based on two-way fluid-solid interaction 戴忠晨 DAI Zhongchen 1 first-author 闫海宁 YAN Haining 1 刘建军 LIU Jianjun 1 付宁宁 FU Ningning 1 中车南京浦镇车辆有限公司 中车南京浦镇车辆有限公司 CRRC Nanjing Puzhen Vehicle Co.,Ltd. CRRC Nanjing Puzhen Vehicle Co.,Ltd. 以铁路普通客车水箱为研究对象,针对列车在加减速过程中对水箱内液体冲击晃动的问题,通过采用双向流固耦合方法进行仿真分析。得到了箱内气液两相流分布状态,获得水箱应力时间历程图和水箱位移历程图,实现对水箱结构强度更为准确的研究分析。通过与无防波板时水箱进行比较,进一步明确了防波板在受到冲击时所起的缓冲作用,为铁路客车水箱结构的设计提供了实用可靠的分析方法。 Taking the water tank of ordinary railway passenger vehicle as the research object,in the process of train acceleration and deceleration,the liquid sloshing problem in the water tank was modeled and numerically analyzed using a two-way fluid-solid interaction method. By studying the gas-liquid two-phase flow distribution state in the water tank,the stress time history diagram and displacement history diagram of the water tank are obtained,and a more accurate analysis of the structural strength of water tank is achieved. By comparing with a water tank without wavebreakers,the cushioning effect of the wavebreakers in sloshing is further clarified,which provides practical and reliable analysis method for the design of tank structure of railway passenger vehicle. 水箱 双向流固耦合 数值分析 结构强度 water tank two-way fluid-structure interaction numerical analysis structural strength U270.385 国家自然科学基金(11962013) 2022-03-08 4 50