柴油机缸盖水腔沸腾传热的修正计算  

Corrected Calculation for Boiling Heat Transfer of Water Jacket in Diesel Engine Cylinder Head

作　　者：傅松[1] 胡玉平[1] 李新才[2] 陈志忠[2] 李国祥[1] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]中国船舶重工集团公司第711研究所,上海201108

出　　处：《车用发动机》2010年第3期39-42,共4页Vehicle Engine

基　　金：山东省自然基金项目(Y2007F26);"十一五"国家科技支撑计划项目(2006BAF01A45-01)

摘　　要：基于单相流沸腾传热模型,提出一种用于沸腾传热计算的修正算法,通过在CFD软件外部修正热流密度和换热系数来反映沸腾传热的影响。采用修正算法分别对某试验水道和柴油机缸盖水腔内的沸腾传热过程进行了数值模拟计算,与试验测量值相比,试验水道的最大计算误差为7.2%,缸盖水腔的最大计算误差为8%,表明修正算法不仅容易在CFD软件中实现,而且具有足够的精度。A corrected algorithm that simulated boiling heat transfer was put forward based on the single-phase flow boiling heat transfer model. The impact of boiling heat transfer was reflected by correcting heat flux and heat transfer coefficient out- side of CFD software. With the corrected algorithm, the boiling heat transfer process in the experiment water channel and cyl- inder head water jacket was simulated. Compared with the experimental results, the maximum calculated error of experiment water channel was 7.2% and that of water jacket in cylinder head was 8%. The results show that the corrected algorithm is not only easy to realize in CFD hut also accurate enough for engineering application.

关 键 词：气缸盖 冷却水腔 沸腾传热 修正公式 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]