机械式冷藏汽车厢体内部气流组织模拟研究  

Simulation Study on the Air-flow Distribution in the Inside Part of Mechanical Refrigerated Truck

作　　者：张娅妮[1] 陈洁[1] 陈蕴光[1] 袁秀玲[1] 郑士萍 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049 [2]约克广州空调冷冻设备有限公司,广东靖远511685

出　　处：《制冷空调与电力机械》2007年第2期10-13,共4页Refrigeration Air Conditioning & Electric Power Machinery

摘　　要：采用数值模拟的方法,建立了冷藏车厢内复杂耦合传热的k-ε模型,并用CFD软件Fluent对不同的风口高度、送风速度以及货物装载间隙下的稳态速度以及温度场进行了对比分析。结果表明,采用贴附射流以及较大的送风速度时,气流喷射能够达到更远的射程;货物与侧壁之间间隙越大,温度分布越均匀。因此,在实际冷藏运输货物时,蒸发器应尽量紧贴顶棚安装,同时应根据厢体尺寸和装载量要求,选择合适的送风速度以及货物与侧壁间隙。Based on numerical simulation approach, the κ-ε model of complicated coupling heat transfer process in the body of mechanical refrigerated vehicles was established. The steady velocity and temperature fields inside the body were simulated with CFD code fluent when there were different diffuser height,airflow velocity and distance between the cargoes and the lateral wall. Analysis and comparison of the simulations show that airflow jet can achieve further range through adopting adherence jet and larger airflow velocity as well as the longer distance between cargos and the lateral wall,the evener distribution of temperature. Therefore,it was better to install the evaporator closed to the ceiling. Besides, an appropriate airflow velocity and distance between the cargoes and the lateral wall was suggested to be set by considering both body size and loadage during the period of refrigerated transportation process.

关 键 词：机械式冷藏汽车 数值模拟 气流组织 

分 类 号：TB657[一般工业技术—制冷工程]