AN EXPERIMENTAL STUDY ON THE REWETTING OF A HOT VERTICAL SURFACE BY CIRCULAR WATER JET IMPINGEMENT

被引：24
作者：
Agrawal, M. K. [1 ]
Sahu, S. K. [1 ]
机构：
[1] Indian Inst Technol Indore, Sch Engn, Discipline Mech Engn, Pithampur Auto Cluster Ltd PACL Campus,Survey 113, Indore 453441, Madhya Pradesh, India
来源：
EXPERIMENTAL HEAT TRANSFER | 2016年 / 29卷 / 02期
关键词：
liquid jet impingement; heat flux; rewetting velocity; infrared thermal imaging; Peclet number; Biot number; HIGH-TEMPERATURE SURFACE; HEAT-TRANSFER; FLUX;
D O I：
10.1080/08916152.2014.973973
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present experimental study analyzes the rewetting behavior of a hot vertical stainless-steel foil by a circular impinging liquid jet. The transient temperature of the hot foil, recorded by an infrared camera, is used to evaluate the rewetting velocity and heat flux distribution. The rewetting velocity varies within 2.0-20.0cm/sec. Maximum surface heat flux is highest at the stagnation point and reduces in the downstream direction. A correlation for the rewetting velocity is developed that predicts 85% of test data within an error band of +/- 30%. Present results agree well with the available theoretical models and test data.
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收藏
页码：151 / 172
页数：22
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