Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO۲ nanofluid
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 125
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شناسه ملی سند علمی:
JR_CHAL-6-1_003
تاریخ نمایه سازی: 31 تیر 1401
چکیده مقاله:
In this paper a numerical investigation is performed to study the effects of different nanofluids on convective heat transfer enhancement in a partitioned square cavity subject to different shapes of nanoparticle using water-SiO۲ nanofluid. This study has been carried out to analyze the effects of SiO۲ nanoparticle, its volumetric fraction between ۲ and ۴%, and nanoparticle shape (i.e. blades, platelets, cylindrical, bricks, and spherical), on the fluid flow and heat transfer characteristics. The overall continuity, momentum, and energy equations are solved by using the finite-volume method and the SIMPLE algorithm. The influence of related parameters such as Rayleigh number (Ra=۱۰۵ to ۱۰۷) and height of partition (h=۰.۱, ۰.۳, ۰.۵H) are studied. Based on the results, independent of nanoparticle shape, the streamlines and isotherms are extremely affected by Rayleigh number and height of partition. For a fixed amount of the partition height, average Nusselt number increases as the Rayleigh number rises.
کلیدواژه ها:
نویسندگان
Ghanbar Ali Sheikhzadeh
Associate professor, Department of Mechanical Engineering, University of Kashan, Iran
Alireza Aghaei
Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
Samereh soleimani
MSc student, Department of Mechanical Engineering, University of Kashan, Iran