摘要
基于流-固耦合仿真方法,采用流体仿真软件STAR-CCM+建立卡车的整车三维辐射模型,仿真分析高速(车速为60 km/h)和驻车2种工况下后处理系统的流场和温度场,并开展后处理系统的热管理。结果表明:由于车速影响,传热损失增加,后处理系统的温度无法满足工作要求;在后处理系统增加保温层后,后处理系统固体壁面温度大幅提升,固体壁面最低温度在高速工况提高了58.83℃,驻车工况下提高了58.50℃;保温效果随着保温层厚度的增加而增加,但保温效果的提高幅度随保温层厚度的增加而减小。
Based on the fluid-structure coupling simulation method,the fluid simulation software STAR-CCM+is used to establish the three-dimensional radiation model of a truck.The flow field and temperature field of the aftertreatment system under high-speed(60 km/h)and parking conditions are simulated,the thermal management of the aftertreatment system is carried out.The results show that due to the influence of vehicle speed,the heat transfer loss increases,and the temperature of the aftertreatment system can not meet the working requirements.After adding insulation layer,the solid wall temperature of the aftertreatment system is significantly increased,and the minimum temperature of the solid wall is increased by 58.83℃in high-speed condition and 58.50℃in parking condition.The insulation increases with the increasing insulation layer thickness,and the temperature rise difference decreases with the increasing insulation layer thickness.
作者
王晓昕
黄凯
杨泽辰
白书战
赵魁
WANG Xiaoxin;HUANG Kai;YANG Zechen;Bai Shuzhan;ZHAO Kui(School of Energy and Power Engineering,Shandong University,Jinan 250061,China;FAW Jiefang Automobile Co.,Ltd.,Changchun 130011,China)
出处
《内燃机与动力装置》
2024年第1期42-49,57,共9页
Internal Combustion Engine & Powerplant
基金
山东省科技型中小企业创新能力提升工程项目(2021TSGC1334)
山东省工程机械智能装备创新创业共同体项目(GTT202110)。
关键词
流-固耦合
后处理系统
热管理
fluid-structure coupling
aftertreatment system
thermal management
作者简介
第一作者:王晓昕(1999-),女,山东德州人,硕士研究生,主要研究方向为发动机后处理系统仿真,E-mail:202134514@mail.sdu.edu.cn;通信作者:白书战(1979-),男,山东莘县人,工学博士,教授,主要研究方向为内燃机燃烧与排放控制技术、整机开发与可靠性技术及新能源汽车技术,E-mail:baishuzhan@sdu.edu.cn。
