Numerical simulation on time-mean characteristics of flow and heat transfer of in-line double-column cylinders in the transitional flow using compound grid system

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• 作者：Shaodong Zhou^a ; Guannan Xi^b ; ^{guannanxi@ntu.edu.cn}
• 关键词：Convection ; Heat transfer enhancement ; Heat exchanger ; Compound grid system ; Transitional flow
• 刊名：International Journal of Refrigeration
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：74
• 期：Complete
• 页码：200-211
• 全文大小：4547 K
• 卷排序：74

文摘

The compound grid system was used in in-line double-column cylinders. The two different effects, time-mean effect and the statistical fluctuation effect, enhance heat transfer. Flow instability improves the effective Re and the temperature difference. Taking away thermal fluid and bringing cold fluid were identified.