摘要
高速列车运行过程中,设备舱内发热设备工作,产生大量的热量.对某型号高速列车车下设备舱长期温度跟踪监测数据进行分析,选取合适试验数据为边界条件,基于三维非定常不可压缩N-S方程和k-ε两方程湍流模型,在横风环境中不同环境温度下用FLUENT对时速350 km/h的高速列车进行车下设备舱温度场仿真.通过对比试验数据和仿真结果,获得置信度较高的数值仿真模型.结果表明:横风来流侧通风格栅位于一位端时通风散热效果更好;在发热设备附近增加通风格栅数量和对称布置通风格栅更有利于车下设备舱通风散热;获得横风条件下车下设备舱温度分布规律,为车下设备的合理布局提供参考.
The heating equipment in the off vehicle equipment cabin generates a great deal of heat during the operation of the high speed train. The long term temperature monitoring data of a high speed train equipment cabin was analyzed,and the appropriate experiment data was chosen as the boundary conditions. Based on three-dimensional unsteady incompressible N-S equation and k-ε two equation turbulence model,the temperature of the equipment cabin in 350 km/h was simulated by FLUENT software at different ambient temperatures in the cross wind environment. An accurate numerical simulation model is obtained by comparing the experimental data and the simulation results. The result shows that at the wind flow side,the ventilation and heat dissipation is better when ventilation grille is positioned at＂B＂end of the car. In the vicinity of the heating equipment,increasing the number of ventilation grille and symmetrical layout of the ventilation grille is more conducive to the heat dissipation. The temperature distribution law of the equipment cabin under the condition of cross wind is obtained,which provides a reference for the reasonable layout of the equipment under the high speed train.
作者
马思群
秦伟
张志鹏
于佳田
石洪基
袁冰
MA Siqun;QIN Wei;ZHANG Zhipeng;YU Jiatian;SHI Hongji;YUAN Bing(School of Traffic and Transportation Engineering,Dalian Jiaotong University,Dalian 116028,China;Maintenance Service Department,CRRC Qingdao Sifang Co.,Ltd,Qingdao 266111,China)
出处
《大连交通大学学报》
CAS
2018年第5期11-14,33,共5页
Journal of Dalian Jiaotong University
基金
国家自然科学基金资助项目(51405057)
辽宁省教育厅科学研究计划资助项目(L2014182)
辽宁省自然科学基金资助项目(20170540121)
关键词
设备舱
横风
温度场仿真
equipment cabin
cross wind
temperature field analysis
