Mixed convection heat transfer of nanofluids about a sphere in porous media
محل انتشار: سومین کنفرانس انتقال حرارت و جرم ایران
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 480
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شناسه ملی سند علمی:
ICHMT03_083
تاریخ نمایه سازی: 7 اسفند 1396
چکیده مقاله:
The mixed convection heat transfer of nanofluids about a sphere embedded in a porous medium saturated with a nanofluid is analyzed theoretically. Using a similarityapproach, partial differential equations are reduced to a set of coupled ordinary differential equations and solved numerically. As a case study, the water base nanofluidswith two types of nanoparticles, Ag and CuO nanoparticles, are analyzed. The effect of different volume fraction of nanoparticles on the heat transfer from a sphere is studied. Results indicate that utilizing nanoparticles in the base fluid can enhance the convective heat transfer in some case, and also it can deteriorate in some cases. Therefore, the volume fraction and type of nanoparticles is critical in enhancement of convective heat transfer of nanofluids.
کلیدواژه ها:
نویسندگان
Masoud Rabeti
Department of Mechanical Engineering, Sousangerd Branch, Islamic Azad University,Sousangerd, Iran;
Omid Jahanian
Department of Mechanical Engineering, Babol University of Science and Technology, Babol, Iran;
Ali Akbar Ranjbar
Department of Mechanical Engineering, Babol University of Science and Technology, Babol, Iran;