基于气泡的缸盖水腔沸腾传热仿真研究  

Simulation Study of Boiling Heat Transfer in Cylinder Head Jacket Based on Bubble

作　　者：张体恩[1] 张卫正[1] 宋立业[1] 曹元福[2] 原彦鹏[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国北方车辆研究所,北京100072

出　　处：《北京理工大学学报》2014年第11期1114-1119,共6页Transactions of Beijing Institute of Technology

基　　金：国家"九七三"计划项目(6131460302)

摘　　要：从气泡核化条件及沸腾起始点要求出发,提出相变判定条件,从而准确界定沸腾区域.基于沸腾均相流计算模型框架,建立了沸腾传热数值计算模型,并利用Robinson实验数据对该计算模型的准确性进行了校核.利用该数值模型对缸盖温度场进行了预测,与实机测温结果进行实验比对,证明新沸腾数值模型计算结果更接近实机测试温度,火力面测点最大误差不超过7%.According to the conditions of bubble nucleation and onset of significant void, the accurate transformation requirements for defining flow boiling were proposed. And the boiling heat transfer numerical model was established based on the framework of boiling homogeneous flow model. The accuracy of the numerical model was validated using the Robinson experimental data. Then the temperature field of cylinder head was predicted with the model. Compared with the engine measured temperature field, the predicted results of the new boiling numerical model are more close to the actual test temperature. And the maximum error of fire face temperature is less than 7%.

关 键 词：沸腾传热 缸盖水腔 气泡 相变 

分 类 号：TH4[机械工程—机械制造及自动化]