CIVILICA We Respect the Science
(ناشر تخصصی کنفرانسهای کشور / شماره مجوز انتشارات از وزارت فرهنگ و ارشاد اسلامی: ۸۹۷۱)

Mixed convection heat transfer of nanofluids about a sphere in porous media

عنوان مقاله: Mixed convection heat transfer of nanofluids about a sphere in porous media
شناسه ملی مقاله: ICHMT03_083
منتشر شده در سومین کنفرانس انتقال حرارت و جرم ایران در سال 1396
مشخصات نویسندگان مقاله:

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;

خلاصه 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.

کلمات کلیدی:
mixed convection, sphere, porous media, nanofluid, darcy model

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/698860/