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Sheikhzadeh, Ghanbar Ali, Aghaei, Alireza, soleimani, Samereh. (1396). Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO2 nanofluid. نشریه علمی دانشگاه سیستان و بلوچستان, 6(1), 27-38. doi: 10.22111/tpnms.2018.3520
Ghanbar Ali Sheikhzadeh; Alireza Aghaei; Samereh soleimani. "Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO2 nanofluid". نشریه علمی دانشگاه سیستان و بلوچستان, 6, 1, 1396, 27-38. doi: 10.22111/tpnms.2018.3520
Sheikhzadeh, Ghanbar Ali, Aghaei, Alireza, soleimani, Samereh. (1396). 'Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO2 nanofluid', نشریه علمی دانشگاه سیستان و بلوچستان, 6(1), pp. 27-38. doi: 10.22111/tpnms.2018.3520
Sheikhzadeh, Ghanbar Ali, Aghaei, Alireza, soleimani, Samereh. Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO2 nanofluid. نشریه علمی دانشگاه سیستان و بلوچستان, 1396; 6(1): 27-38. doi: 10.22111/tpnms.2018.3520

Effect of nanoparticle shape on natural convection heat transfer in a square cavity with partitions using water-SiO2 nanofluid

Challenges in Nano and Micro Scale Science and Technology
مقاله 3، دوره 6، شماره 1، فروردین 2018، صفحه 27-38    اصل مقاله (1.52 M)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22111/tpnms.2018.3520
نویسندگان
Ghanbar Ali Sheikhzadeh1؛ Alireza Aghaei2؛ Samereh soleimani3
1Associate professor, Department of Mechanical Engineering, University of Kashan, Iran
2Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
3MSc student, Department of Mechanical Engineering, University of Kashan, Iran
چکیده
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-SiO2 nanofluid. This study has been carried out to analyze the effects of SiO2 nanoparticle, its volumetric fraction between 2 and 4%, 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=105 to 107) and height of partition (h=0.1, 0.3, 0.5H) 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.
کلیدواژه‌ها
natural convection؛ Nanofluid؛ Nanoparticle shape؛ Cavity؛ SiO2
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