Applied Thermal Engineering, ( ISI ), Volume (107), No (107), Year (2016-8) , Pages (1233-1247)

Title : ( Vortex Generators Position Effect on Heat Transfer and Nanofluid Homogeneity: A Numerical Investigation and Sensitivity Analysis )

Authors: Mojtaba Mamourian , kamel Milani Shirvan , سروش میرزاخانلری , Asgar Bradaran Rahimi ,

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A 2-D numerical study and a sensitivity analysis of convective heat transfer in a channel with vortex generators for application in solar heat exchangers are investigated using a Lagrangian-Eulerian model along with determination of the Nanoparticles concentration distribution. Numerical simulations are carried out to study the effects of Reynolds number (50 ≤ Re ≤ 250), Nanoparticles volume fraction (0.01 ≤ Ф ≤ 0.04), distance between two vortex generators (10mm ≤ d ≤ 20mm) and the angles between them (30° ≤ α and β ≤ 150°) on the heat transfer performance and Nanoparticles distribution. In addition, an analysis on effective parameters is processed utilizing the Response Surface Methodology. The results show a 39.81% increase in the Nusselt number for Re numbers ranged from 150 to 250. Also, it is found that increasing in d and a and reduction of b and Ф increases the mean Nusselt number. Enhancement in d, a and b and also decreasing in Re number and Ф increases the homogeneity of the Nanofluid. Finally, it is shown that the sensitivity of the mean Nusselt number to the Re number, Ф and d parameters is more than the sensitivity of the Nanoparticles concentration ratio to these parameters.

Keywords

, Response Surface Methodology; Sensitivity Analysis; Vortex Generators; Lagrangian, Eulerian model; Homogeneity of Nanofluid; Solar Heat
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@article{paperid:1057328,
author = {Mamourian, Mojtaba and Milani Shirvan, Kamel and سروش میرزاخانلری and Bradaran Rahimi, Asgar},
title = {Vortex Generators Position Effect on Heat Transfer and Nanofluid Homogeneity: A Numerical Investigation and Sensitivity Analysis},
journal = {Applied Thermal Engineering},
year = {2016},
volume = {107},
number = {107},
month = {August},
issn = {1359-4311},
pages = {1233--1247},
numpages = {14},
keywords = {Response Surface Methodology; Sensitivity Analysis; Vortex Generators; Lagrangian-Eulerian model; Homogeneity of Nanofluid; Solar Heat Exchanger},
}

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%0 Journal Article
%T Vortex Generators Position Effect on Heat Transfer and Nanofluid Homogeneity: A Numerical Investigation and Sensitivity Analysis
%A Mamourian, Mojtaba
%A Milani Shirvan, Kamel
%A سروش میرزاخانلری
%A Bradaran Rahimi, Asgar
%J Applied Thermal Engineering
%@ 1359-4311
%D 2016

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