On the double-layer structure of the boundary layer adjacent to a sidewall of a differentially heated cavity |
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| Authors: | Feng Xu John C Patterson Chengwang Lei |
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| Affiliation: | 1. Physics Department, Ural Federal University, Lenina str. 51, 620000 Ekaterinburg, Russia;2. Kutateladze Institute of Thermophysics SB RAS, 630090 Novosibirsk, Russia;3. James Weir Fluids Laboratory, Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow G1 1XJ, UK;4. Aix Marseille Université – Polytech Marseille, Département de Mécanique Energétique – IUSTI, UMR CNRS 7343, 5 rue Enrico Fermi, 13453 Marseille cedex 13, France;1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, China;2. College of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, China;3. Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK |
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| Abstract: | This study is concerned with the transition of the boundary layer adjacent to a sidewall of a differentially heated cavity to a double-layer structure and with the important flow and heat transfer features of the double-layer structure. The transition to the double-layer structure is examined by comparing numerical and experimental results. The mechanism responsible for the formation of the double-layer structure, i.e. the stratification of the fluid in the core, is discussed. Detailed discussion of the energy balance adjacent to the sidewall reveals that the heat transfer in the double-layer structure is rather complex. There is an opposing horizontal thermal diffusion within the double-layer structure. |
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