发动机缸体冷却液流动传热的三维CFD模拟  

CFD three-dimensional numerical calculation on flow and heat transfer of cooling-water in engine cylinder cooling jacket

作　　者：熊树生[1] 周文华[1] 张朝山 何文华[1] 陈理[3] 程超[1] 

机构地区：[1]浙江大学动力机械及车辆工程研究所,浙江杭州310027 [2]杭州经济职业技术学院汽车系,浙江杭州310018 [3]清华大学汽车工程学系,北京100084

出　　处：《浙江大学学报（工学版）》2007年第7期1191-1194,共4页Journal of Zhejiang University：Engineering Science

摘　　要：针对发动机冷却系统优化设计中存在冷却液的三维流动与传热的问题,为了提高发动机的冷却效率、降低高温零件的热负荷、实现整机的热量分配和热量利用,以4缸发动机为研究对象,利用计算流体动力学(CFD)软件STAR-CD,对发动机缸体冷却水套内冷却液的流动和传热进行三维数值模拟.通过CAD建模、计算网格划分和给定边界条件,进行数值计算,给出了发动机冷却水套内冷却水的流场、压力场及表面传热系数分布,为进行发动机冷却水套内冷却液的流动和传热分析以及冷却水套的优化设计提供了理论依据.Three-dimensional numerical analysis of flow and heat transfer of cooling-water in the engine cylinder cooling jacket with computational fluid dynamics （CFD） software STAR-CD was carried out based on a four-cylinder engine to overcome the three-dimensional flow and heat transfer of cooling water in the engine jacket optimization design, improve the engine＇s cooling efficiency, reduce heat load of high temperature parts, and realize the engine＇s heat distribution and heat utilization. By computer aided design （CAD） modeling, setting up meshes and defining boundaries, information of the flow field, distribution of the surface coefficient of heat transfer and pressure losses of the cooling jacket were presented through numerical calculation, providing theoretical evidence for engine jacket optimization.

关 键 词：发动机 冷却水套 计算流体动力学分析 流动与传热 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]