Powder Technology, ( ISI ), Volume (305), No (1), Year (2017-1) , Pages (495-508)

Title : ( Increment of mixed convection heat transfer and decrement of drag coefficient in a lid-driven nanofluid-filled cavity with a conductive rotating circular cylinder at different horizontal locations: A sensitivity analysis )

Authors: سروش میرزاخانلری , kamel Milani Shirvan , Mojtaba Mamourian , Ali J. Chamkha ,

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Since in most industrial rotating equipment, increasing thermal efficiency and reduction of drag has always been subject of interest, in this paper, a 2-D numerical investigation on mixed convection heat transfer and drag coefficient in a lid-driven square cavity filled with Al2O3 Nanofluid is done under the effect of an inner rotating cylinder. To analyze effective parameters on heat transfer and drag coefficient on movable wall, a sensitivity analysis is carried out utilizing the Response Surface Methodology. Simulations are performed for effective parameters of the Richardson number (0.1 ≤ Ri ≤ 10), dimensionless rotational speed (0 ≤ Ω ≤ 5), a/b ratios (0.5 ≤S ≤ 1), and the Nanoparticle volume fraction (0.00 ≤ Ф ≤ 0.03) with a constant Grashof number of 104. It is found that the mean Nusselt number enhances with Ri number and Ф and decreases with increasing of Ω and S. Additionally, increasing the Ri number and Ω increases the drag coefficient but it reduces as Ф and S increase. The sensitivity analysis results showed that to maximize the mean Nu number and minimize the drag coefficient simultaneously, the effective parameters must be Ω = 0, Ri= 0.13636, Ф = 0.03 and S = 0.5.

Keywords

, Sensitivity analysis, Lid-Driven cavity, Heat transfer, Drag coefficient, Nanofluid,
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@article{paperid:1059003,
author = {سروش میرزاخانلری and Milani Shirvan, Kamel and Mamourian, Mojtaba and Ali J. Chamkha},
title = {Increment of mixed convection heat transfer and decrement of drag coefficient in a lid-driven nanofluid-filled cavity with a conductive rotating circular cylinder at different horizontal locations: A sensitivity analysis},
journal = {Powder Technology},
year = {2017},
volume = {305},
number = {1},
month = {January},
issn = {0032-5910},
pages = {495--508},
numpages = {13},
keywords = {Sensitivity analysis; Lid-Driven cavity; Heat transfer; Drag coefficient; Nanofluid; Optimization},
}

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%0 Journal Article
%T Increment of mixed convection heat transfer and decrement of drag coefficient in a lid-driven nanofluid-filled cavity with a conductive rotating circular cylinder at different horizontal locations: A sensitivity analysis
%A سروش میرزاخانلری
%A Milani Shirvan, Kamel
%A Mamourian, Mojtaba
%A Ali J. Chamkha
%J Powder Technology
%@ 0032-5910
%D 2017

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