Effects of flow obstacles on pool boiling critical heat flux of a downward-facing metal heater
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- 作者：Hong Hyun Sona ; Kyusang Songa ; Uiju Jeonga ; Gwang Hyeok Seoa ; Gyoodong Jeuna ; Sung Joong Kima ; b ; sungjkim@hanyang.ac.kr" class="auth_mail" title="E-mail the corresponding author
- 关键词：Critical heat flux ; Flow obstacle ; Downward-facing ; Blockage ratio ; Slug bubble flow
- 刊名：Experimental Thermal and Fluid Science
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：80
- 期：Complete
- 页码：313-326
- 全文大小：6073 K
文摘
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Pool boiling critical heat flux in a downward-facing heater decreases with an increase in the obstacle size.
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The dry region behind obstacles stagnates due to the delayed edge separation.
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The effect of obstacle shape suddenly intensified at a blockage ratio of 0.51.
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Two edge separation of right-angled obstacle delays collapse of the dry region behind obstacles.
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Curved-boundaries of obstacles are beneficial in delaying critical heat flux triggers.