摘要
列车制动过程是列车运行过程的重要组成部分,是列车安全的重要保障。车辆在制动过程中通过制动盘和制动闸片之间的滑动摩擦力将动能转化为热能,需要对盘式制动器进行充分的冷却以防止各种因温度过高而产生的制动问题。所以对制动盘散热能力的研究对列车安全非常重要。论文介绍了一种新的制动盘传热特性模拟方法,对制动盘内部通道传热试验中的试验试件及装置进行简化,建立了制动盘在滚动壁面上匀速滚动的运动模型。用动网格方法对制动盘的滚动过程进行了数值模拟,获得了针肋型制动盘试件周围流场和内部通道对流换热特性。
Train braking process is an important part of train running process and it is an important guarantee of train safety.The rail vehicle converts kinetic energy into thermal energy through the sliding friction between the brake disc and the brake pad during braking process,and it is necessary to adequately cool the brake disc to prevent various braking problems caused by excessive temperature.Therefore,the research on the heat dissipation capacity of brake disc is very important for train safety.This paper introduce a new method to simulate the heat transfer characteristics of brake disc,simplifies the test specimen and device in the heat transfer test of the internal passage of the brake disc,and establishes the motion model of the brake disc rolling at uniform speed on the rolling wall.We simulate the rolling process of the brake disc by the moving grid method,and obtain the fow field distribution around the pin fin brake disc test specimen and the convection heat transfer characteristics in the internal passage of the brake disc test specimen.
作者
王璐
臧元庆
卢鑫
戴子闻
王艺博
王良璧
WANG Lu;ZANG Yuanqin;LU Xin;DAI Ziwen;WANG Yibo;WANG Liangbi(School of Mechanical and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Railway Vehicle Thermal Engineering Ministry of Education(Lanzhou Jiaotong University),Lanzhou 730070,China)
出处
《工程热物理学报》
北大核心
2025年第6期2003-2011,共9页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.52066009)
甘肃省高校科研创新平台重大培育项目(No.2024CXPT-13)。
关键词
传热特性
内部通道
制动盘
动网格
数值方法
heat transfer performance
internal passage
brake disc
moving grid
numerical method
