化工学报2019，Vol.70Issue(z2)：250-257,8.DOI:10.11949/0438-1157.20190498
基于RPI模型的内燃机冷却水腔内数值模拟研究
Numerical study of engine water jackets using RPI model
摘要
Abstract
Based on the Euler two-phase flow model, a subcooled boiling heat transfer RPI (Rensselaer polytechnic institute) model of flow and heat transfer for internal combustion engines was established. Compared with the experimental results of Robinson’s rectangular channel, and the applicability and accuracy of the RPI model are verified. The model is applied to the calculation of direct coupled heat transfer in the cylinder head and cooling water jacket of an actual internal combustion engine, and the results of single-phase flow and two-phase flow are compared and analyzed. The results show that boiling heat transfer can obviously improve the heat transfer efficiency of cooling water jacket and reduce the high temperature of local area such as bridge passages, the error between calculation results and experiment results is smaller by using two-phase flow model considering boiling, and the error of measuring point temperature is reduced by 1.78% compared with that calculated by using convection heat transfer model.关键词
内燃机/冷却水腔/沸腾换热/两相流/RPIKey words
internal combustion engine/ cooling water jacket/ boiling heat transfer/ two-phase flow/ RPI分类
能源科技引用本文复制引用
董非,苑天林,武志伟,倪捷..基于RPI模型的内燃机冷却水腔内数值模拟研究[J].化工学报,2019,70(z2):250-257,8.基金项目
国家自然科学基金项目(51406070) （51406070）
江苏省六大高峰人才项目(2017-JSQC-008) （2017-JSQC-008）
