The effect of axial conduction on heat transfer in a liquid microchannel flow |
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| Authors: | Kevin D Cole Barbaros Çetin |
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| Affiliation: | 1. Mechanical Engineering Department, N104 Scott Engineering, Center University of Nebraska–Lincoln, Lincoln, NE 68588-0656, United States;2. Mechanical Engineering, Middle East Technical University–Northern Cyprus Campus Kalkanl?, Güzelyurt, TRNC Mersin 10, Turkey;1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China;3. School of Mathematical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia;1. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong;2. School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom;1. Department of Chemical Engineering, Motilal Nehru National Institute of Technology, Allahabad-211 004, India;2. Department of Mechanical Engineering, Motilal Nehru National Institute of Technology, Allahabad-211 004, India |
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| Abstract: | Analysis is presented for conjugate heat transfer in a parallel-plate microchannel. Axial conduction in the fluid and in the adjacent wall are included. The fluid is a constant property liquid with a fully-developed velocity distribution. The microchannel is heated by a uniform heat flux applied to the outside of the channel wall. The analytic solution is given in the form of integrals by the method of Green’s functions. Quadrature is used to obtain numerical results for the local and average Nusselt number for various flow velocities, heating lengths, wall thicknesses, and wall conductivities. These results have application in the optimal design of small-scale heat transfer devices in areas such as biomedical devices, electronic cooling, and advanced fuel cells. |
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