Influence of cooling gallery structure on the flow patterns of two-phase flow and heat transfer characteristics

被引：22

作者：

Deng Lijun ^{[1
]}

Zhang Jian ^{[1
]}

Hao Guannan ^{[1
]}

机构：

[1] Binzhou Univ, Coll Electromech Engn, Binzhou 256600, Shandong, Peoples R China

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2020年 / 110卷

基金：

中国国家自然科学基金;

关键词：

Cooling gallery; Visualization test; Numerical simulation; Area coverage; Heat transfer coefficient; OIL;

D O I：

10.1016/j.icheatmasstransfer.2019.104407

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In research of the accurate relation between two-phase flow pattern and heat transfer characteristics in distinct cooling gallery structures, a dynamic transient visualization test bench was established recording flow of fluid real-time. Meanwhile, multiphase flow model and dynamic mesh were also employed to carry out simulation calculation concerning the dynamic characteristics of two-phase flow and heat transfer characteristics. Compared with the experimental results, the calculation results were extremely close to the actual state. It can be clearly seen that "liquid slug" of engine oil in Kidney shaped cooling gallery emerged mostly during upstroke and the half of downstroke when crankshaft angle was roughly at 90 degrees and 270 degrees while that in water droplet shaped cooling gallery emerged mostly near the entry and exit of engine oil during downstroke of piston. However, liquid slug of engine oil in ellipse shaped cooling gallery appeared in more locations relatively.

引用

页数：8

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