A universal entrance nusselt number for internal slip flow |
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| Affiliation: | 1. SKF Engineering and Research Centre, Kelvinbaan 16, 3439 MT, Nieuwegein, The Netherlands;2. Université de Lyon, INSA de Lyon CNRS, LaMCoS, France;1. Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, People’s Republic of China;2. Research Unit of Key Techniques for Treatment of Burns and Combined Burns and Trauma Injury, Chinese Academy of Medical Sciences, Shanghai 200433, People’s Republic of China;3. Department of Burns and Plastic Surgery, General Hospital of Central Theater Command of Chinese People''s Liberation Army, Wuhan 430070, People’s Republic of China;4. Department of Medical Imaging, The First Affiliated Hospital of Naval Medical University, Shanghai 200433, People’s Republic of China;5. Department of Critical Care Medicine, Naval Medical Center of PLA, Naval Medical University, Shanghai 200052, People’s Republic of China;1. Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran;2. Department of Chemical Engineering, College of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran;1. Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany;2. Department of Environmental Microbiology, Helmholtz-Centre for Environmental Research – UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;1. School of Astronautics, Northwestern Polytechnical University, Xi''an 710072, China;2. Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong |
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| Abstract: | A universal finite Nusselt number is found for laminar slip flow heat transfer at the entrance of a conduit. The Nusselt number expression is valid for both isothermal and isoflux thermal boundary conditions and for any conduit geometry. The value of the entrance Nusselt number is found to be dependent on two nondimensional parameters that include effects of rarefaction, fluid properties, and the fluid/wall interaction. |
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