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Photogallery

Visual Observation of Circular Water Jet Impingement Boiling on Stationary Hot Steel Plate

[+] Author and Article Information
Jungho Lee

Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials, Daejon,305-343, Korea
jungho@kimm.re.kr

Sangho Sohn

Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials, Daejon,305-343, Korea
sangho@kimm.re.kr

Jaebum Park

Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials, Daejon,305-343, Korea
johnpaulpark@kimm.re.kr

Corresponding author.

J. Heat Transfer 137(8), 080910 (Aug 01, 2015) Paper No: HT-15-1245; doi: 10.1115/1.4030474 History: Received March 30, 2015; Revised April 03, 2015; Online June 01, 2015

Abstract

The time-and space-resolved water jet impingement heat transfer on stationary hot steel plate was measured by a novel experimental technique that has a function of high-temperature heat flux gauge. The simultaneous visual observation was helpful to understand the complex heat transfer regimes occurring on a stationary hot steel plate cooled from 900°C by a circular water jet. The heat transfer regimes adjacent to a circular water jet impinging on a hot steel plate were known as to be classified into 5 distinct regimes; (I) single phase forced convection, (II) nucleate and transition boiling, (III) forced convection film boiling, (IV) agglomerated pools, (V) radiation and natural convection to surroundings. The observed images of water jet impingement boiling were well agreed with the measured cooling curve and boiling curve, so this study can provide the benchmark data for validating the 5 distinct regimes.

Copyright © 2015 by ASME
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