Jet impingement quenching phenomena for hot surfaces well above the limiting temperature for solid-liquid contact

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Title Jet impingement quenching phenomena for hot surfaces well above the limiting temperature for solid-liquid contact
Author Islam, Md Ashraful; Monde, Masanori; Woodfield, Peter; Mitsutake, Yuichi
Journal Name International Journal of Heat and Mass Transfer
Year Published 2008
Place of publication United Kingdom
Publisher Pergamon
Abstract Experiments were conducted to understand the phenomena that happen just after a subcooled free-surface circular water jet impinges on a high temperature surface. A 2 mm-water-jet of 5–80 K subcooling and 3–15 m/s velocity was impinged on the flat surface of a cylindrical steel/brass block that was preheated to 500–600 °C. The transient temperature data were recorded and used to predict the surface temperature by an inverse heat conduction technique. A high-speed video camera was also employed to capture the flow condition. It is found that for a certain period of time the surface temperature remains well above the thermodynamic limiting temperature that allows stable solid–liquid contact. What happens during this period and what makes the surface temperature drop to the limiting temperature are important questions whose possible answers are given in this article. The cooling curves at the center of the impinging surface for different experimental conditions are also explained in relation with the limiting temperature and three characteristic regions having different types of flow patterns are identified.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.01.059
Volume 51
Issue Number 5-6
Page from 1226
Page to 1237
ISSN 0017-9310
Date Accessioned 2010-10-25
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Mechanical Engineering
URI http://hdl.handle.net/10072/38552
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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