空调安装方式优化对列车气动特性影响研究  

Study of the optimization of air conditioner installation mode's effect on aerodynamic performance of high speed train

作　　者：洪琪琛 杨明智[1] 丁畅 HONG Qichen;YANG Mingzhi;DING Chang(Key Laboratory of Traffic Safety on Track,Ministry of Education,School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China)

机构地区：[1]中南大学交通运输工程学院,轨道交通安全教育部重点实验室,湖南长沙410075

出　　处：《铁道科学与工程学报》2018年第10期2631-2638,共8页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(U11372360);国家科技支撑计划资助项目(2015BAG12B01)。

摘　　要：基于三维、不可压和定常N-S方程的数值模拟计算方法,从空调机组的安装位置和高度等2个方向着手,分析不同方案下列车运行时的气动特性。研究结果表明:当头车空调位置远离车头、尾车空调位置靠近车尾时列车总阻力最大,较之其他方案大2.66%左右;空调阻力随着车体高度增加而逐渐减小,当车体增加高度达到350 mm时,3节车总阻力下降7.55%,但与此同时,列车在横风环境下运行稳定性变差。Based on steady N-S equation of three-dimensional and uncompressible viscous fluid,the aerodynamic characteristics of the train under different schemes are simulated from two directions:the installation position and the height of the air conditioner.The results indicate that when the position of head car’s air conditioner is far from the front while the air conditioner position of the tail car keep close to the end of the train,the total resistance turns out to be the maximum,which is 2.6%higher than other programs;The resistance of the air conditioner decreases as the height of the train increases,when the increase of train height reaches 350 mm,the total resistance of three cars decreased by 7.55%,but at the same time the stability of the train running in the cross-wind will be worse.

关 键 词：高速列车 数值计算 外形优化 空调机组 气动特性 

分 类 号：U270.383[机械工程—车辆工程]