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International Journal of Engineering، جلد ۲۵، شماره ۱، صفحات ۷۹-۸۸
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عنوان انگلیسی A NUMERICAL STUDY OF SINGLE-PHASE FORCED CONVECTIVE HEAT TRANSFER WITH FLOW FRICTION IN MICROCHANNELS (RESEARCH NOTE)
چکیده انگلیسی مقاله Three-dimensional simulations of the single-phase laminar flow and forced convective heat transfer of water in microchannels with small rectangular sections having specific hydraulic diameters and distinct geometric configurations were investigated numerically. The numerical results indicated that the laminar heat transfer was to be dependent upon the aspect ratio and the ratio of the hydraulic diameter to the center to center distance of the microchannels. The geometries and operating conditions of that indicated microchannel were created using a finite volume-based computational fluid dynamics technique. The aims of this paper were to obtain computational Nusselt number in laminar flow by a numerical method and validate it with available experimental studies. The results in this numerical method were in a good agreement with experimental results within an error in acceptable range. After that, at each Z-location conceivable temperature profiles and pressure drops were obtained for each simulation and for each Reynolds number related pressure drops were explored. Finally, the effects of the geometric parameters on the average Nusselt number in the laminar flow were illustrated numerically. 
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نویسندگان مقاله samad majidyfar |
Mechainical Engineering, Urmia University

Nader Pourmahmoud |
Mechainical Engineering, Urmia University

iraj mirzaie |
Mechanical Engineering Department, Urmia University

Pedram Mohajeri Khameneh |
Mechanical Engineering, Urmia University

Mostafa Rahimi eosboee |
Mechainical Engineering, Urmia University

نشانی اینترنتی http://www.ije.ir/article_71972_a869138551513f186fd06162e4e7d231.pdf
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