基于沸腾传热的柴油机多场耦合传热研究  

Multi-field coupled heat transfer of diesel engine based on boiling heat transfer

作　　者：张萍[1] 王银[1] 张博[1] 欧阳光耀[1] 刘琦[2] ZHANG Ping;WANG Yin;ZHANG Bo;OUYANG Guang-yao;LIU Qi(College of Power Engineering,Naval Univ.of Engineering,Wuhan 430033,China;Northwest Inst.of Mechanical&Electrical Engineering,Xianyang 712099,China)

机构地区：[1]海军工程大学动力工程学院,武汉430033 [2]西北机电工程研究所,陕西咸阳712099

出　　处：《海军工程大学学报》2018年第5期47-52,64,共7页Journal of Naval University of Engineering

基　　金：湖北省自然科学基金资助项目(2016CFB623);海军工程大学校基金资助项目(HGDQNEQJJ15007)

摘　　要：为了系统地分析沸腾传热的主要影响因素和变化规律,首先基于Kandlikar分区方法对沸腾传热曲线进行分区并对其进行标定;然后,将重新标定的沸腾传热模型应用于TBD234V6柴油机缸盖与冷却水腔的耦合传热计算。结果表明:缸盖冷却水腔中靠近火力面鼻梁区及排气道的局部壁面出现沸腾传热现象;考虑沸腾时,缸盖最高温度比不考虑沸腾时降低52K,贴壁面层的冷却水温最大值比不考虑沸腾时升高了3.2K。For a systematic analysis of the main influencing factors and changing rules of boiling heat transfer,the boiling heat transfer curve is partitioned and calibrated based on the Kandlikar method,which is then applied to the coupled heat transfer calculation in cylinder head and cooling water jacket of TBD234V6 diesel engine.The result indicates that the boiling heat transfer phenomenon in cooling water jacket appears on fire deck near bridge zone and exhaust pipe,that when boiling heat transfer model is taken into account,the heat transfer efficiency between cylinder head and cooling water jac-ket is enhanced,which causes the maximum temperature value of cylinder head 52 K less than that in the non-boiling model,whereas the thermal load of cylinder head decreases effectively,and the maximum temperature of cooling water jacket near fire deck 3.2 K higher than in the non-boiling model.

关 键 词：柴油机 缸盖 冷却水腔 沸腾传热 分区模型 

分 类 号：TK4[动力工程及工程热物理—动力机械及工程]