Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 0.7

ISSN Печать: 1940-2503
ISSN Онлайн: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2012004025
pages 151-158

EFFECTS OF RADIAL FINS ON THE LAMINAR NATURAL CONVECTION OF A NANOFLUID IN CONCENTRIC ANNULI

Ghanbar Ali Sheikhzadeh
Department of Mechanical Engineering, University of Kashan, Kashan, Iran
Maryam Arbaban
Isfahan University Of Technology
A. Arefmanesh
Department of Mechanical Engineering, University of Kashan, Iran

Краткое описание

The laminar natural convection of the Cu-water nanofluid between two horizontal concentric cylinders with four radial fins attached to the inner cylinder is studied numerically. The governing equations with the respective boundary conditions are solved by using the finite volume method and the SIMPLER algorithm. The computations are performed for various Rayleigh numbers, fin lengths, and thermal conductivity ratios. The results presented in this study are for a range of Rayleigh numbers from 103 to 105, dimensionless lengths of the fins between 0.1 to 0.4, and two thermal conductivity ratios, namely, 100 and 654. It is observed from the results that the average Nusselt number decreases with increasing the fins' lengths. However, the heat transfer rate and the average Nusselt number increase by increasing the fins' thermal conductivity at high Rayleigh numbers.

Ключевые слова: natural convection, nanofluid, annuli, radial fin

Articles with similar content:

THE INFLUENCE OF THERMAL CONDUCTIVITY ON THE HEAT TRANSFER BETWEEN A CYLINDER AND ASCENDING FLUID
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
B. Dadda, Said Abboudi, Ghezal Abderrahmane, Z. Ouchiha, Ahmed Benzaoui
MIXED CONVECTION HEAT TRANSFER FLOW OF AIR INSIDE A SINUSOIDAL CORRUGATED CAVITY WITH A HEAT-CONDUCTING HORIZONTAL CIRCULAR CYLINDER
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 5
Salam Hadi Hussain, Qusay Rashid Abd-Amer
NATURAL CONVECTION AND SURFACE RADIATION BETWEEN A HORIZONTAL HEAT GENERATING SOLID CYLINDER AND A THICK OUTER CYLINDRICAL SHELL
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Vinay Senve, G.S.V.L. Narasimham
EFFECTS OF VARIABLE TEMPERATURE ON MIXED CONVECTION OF A CU-WATER NANOFLUID IN A DOUBLE-LID-DRIVEN POROUS ENCLOSURE WITH ACTIVE MIDDLE VERTICAL WALL
Journal of Porous Media, Vol.22, 2019, issue 4
N. Nithyadevi, Hakan F. Öztop, A. Shamadhani Begum, Nidal Abu-Hamdeh
NATURAL CONVECTION IN A HORIZONTAL ANNULUS WITH AN INNER HEAT-GENERATING SOLID SQUARE CYLINDER AND AN OUTER ISOTHERMAL CIRCULAR BOUNDARY
Computational Thermal Sciences: An International Journal, Vol.3, 2011, issue 2
A. Shaija, G.S.V.L. Narasimham