板翅式机油冷却器内部压力分布研究  

Study on Inner Pressure Distribution in Offset Strip-fin Oil Cooler

作　　者：李杰[1] 王耘[1] 宋晓文[1] 刘荣会[1] 钱炜苗[1] 

机构地区：[1]浙江大学动力机械与车辆工程研究所,浙江杭州310027

出　　处：《轻工机械》2010年第5期19-23,共5页Light Industry Machinery

摘　　要：板翅式机油冷却器(简称油冷器)是一种高效的紧凑式换热器,用来保证发动机中的机油处于理想的工作温度。文章运用计算流体力学(CFD)技术,将翅片区域简化为多孔介质模型,研究在机油流动分配不均匀的条件下油冷器内部压力分布情况,并提出了一种确定多孔介质模型中阻力系数的方法以及表征油冷器内部压力关于进口压力、芯子层数、进口流速等因素的数学模型,实现油冷器内部压力大小的预测。Offset strip-fin oil cooler is a kind of compact heat exchanger with high efficiency,which can ensure the lubricant in engine at desirable working point.The paper adopted the CFD method to simplify strip-fins as porous media;studied the inner pressure distribution of oil cooler under the uneven distribution of mechanic oil flow condition,as well as presented the method to fix friction coefficient in porous media model and math mold including presentation of inner pressure of oil cooler ——factors of inlet pressure,core layers inlet velocity etc.thus realize to predict the inner pressure of oil cooler.

关 键 词：传热学 油冷却器 计算流体力学 多孔介质 压力 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TQ051.5[动力工程及工程热物理—热能工程]