Numerical study on combined natural and forced convection in the fully-developed turbulent region for a horizontal circular tube heated by non-uniform heat flux

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• 作者：Zhen Huang ; Zeng-Yao Li ; ^{lizengy@mail.xjtu.edu.cn} ; Wen-Quan Tao
• 关键词：Fully developed mixed turbulent flow ; Non-uniform heat flux ; Local buoyancy force ; Parabolic trough solar collector
• 刊名：Applied Energy
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：185
• 期：part_P2
• 页码：2194-2208
• 全文大小：7280 K
• 卷排序：185

文摘

Mixed convection under non-uniform heat flux is different from that under uniform heat flux. Characteristic of turbulent mixed convection can’t be uniquely determined by Gr/Re2. Criterion for the buoyancy free is proposed to guide the practical design of PTC.