Abstract
ABSTRACT In the present work, a series of numerical calculations have been conducted on the cooling of a hot surface using an air/water mist jet. In some cooling processes, such as in the glass-tempering process, direct contact between the cold water drops and the hot surface should be avoided, because this may cause surface cracks due to the sharp temperature gradients. Thus, the main focus of this study is finding the appropriate operating conditions for maximum cooling without direct contact between the drops and the surface. A series of numerical experiments have been performed, and, at the same time, those results were compared with those of the previous experiments for verification purposes. The effects of droplet impinging velocity, hot plate temperature, and liquid loading ratio for mono-dispersed drops of various sizes were studied in detail.KeyWords : Mist Flow( ), Jet Impinging( ), Hot Plate( ), Mist-jet Cooling Map액적류 충돌 제트 고온 평판 (액적충돌기준선도) # Corresponding Author : jklee99@kyungnam.ac.kr Tel: +82-55-249-2613, Fax: +82-55-249-2617
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