COOLING OF A MOVING PLATE WITH AN IMPINGING CIRCULAR WATER JET

被引：50

作者：

CHEN, SJ

KOTHARI, J

TSENG, AA

机构：

[1] Department of Mechanical Engineering, Temple University, Philadelphia, PA

[2] Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 1991年 / 4卷 / 03期

基金：

美国国家科学基金会;

关键词：

IMPINGEMENT COOLING; BOILING; MOVING SURFACES;

D O I：

10.1016/0894-1777(91)90051-R

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A hybrid scheme combining experimental and numerical methods has been developed to study heat transfer in the case of a circular jet impinging on a moving metal plate. The experiment is intended to resemble the cooling system in steel rolling. Heat transfer characteristics with temperatures above and below boiling are investigated. Heat transfer due to jet impingement on a stationary plate is first studied to verify the present method. The effect of the plate motion is to elongate the water layer in the moving direction, resulting in heat transfer enhancement downstream of the stagnation point. Peak heat transfer coefficients are almost the same for all cases studied, because the plate temperatures at the impingement zone drop rapidly below the boiling temperature, resulting in single-phase forced convection. Overall cooling efficiency is better for the moving case than for the stationary case.

引用

页码：343 / 353

页数：11

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