Title : ( Numerical investigation and sensitivity analysis of effective parameters on combined heat transfer performance in a porous solar cavity receiver by response surface methodology )
Authors: kamel Milani Shirvan , Mojtaba Mamourian , S. Mirzakhanlari , R. Ellahi , K. Vafai ,
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Abstract
A numerical study on natural convection along with surface radiation heat transfer in an inclined porous solar cavity receiver by means of response surface methodology (RSM) is investigated. Discretization of the governing equations is first performed using a finite volume method and then solved with SIMPLE algorithm. Effects of physical parameters such as Rayleigh number (104 6 Ra 6 106), Darcy number (105 6 Da 6 103), inclination angles (0 6 h 6 90), dimensionless porous substrate thickness (1/3 6 d 6 1), wall surface emissivity (0 6 e 6 1) and surface radiation heat transfer rate are examined. The sensitivity analysis is also presented. It is found that the sensitivity of mean Nusselt number increases by increasing Rayleigh number, Darcy number and inclination angle h whereas the sensitivity of mean Nusselt number of natural convection heat transfer to porous substrate thickness d declines. Consequently increase in the thickness of porous substrate reduces mean Nusselt number of natural convection heat transfer. Also, the sensitivity of mean Nusselt number of natural convection heat transfer to Rayleigh number Ra, porous substrate thickness d, Darcy number Da and the inclination angle h is found to be higher than the mean Nusselt number of radiation heat transfer. However, the sensitivity of mean Nusselt number of radiation heat transfer to the surface emissivity e is higher than the mean Nusselt number of natural convection.
Keywords
, Response surface methodology, Sensitivity analysis, Solar cavity receiver, Porous medium, Combined heat transfer
@article{paperid:1059004,
author = {Milani Shirvan, Kamel and Mamourian, Mojtaba and S. Mirzakhanlari and R. Ellahi and K. Vafai},
title = {Numerical investigation and sensitivity analysis of effective parameters on combined heat transfer performance in a porous solar cavity receiver by response surface methodology},
journal = {International Journal of Heat and Mass Transfer},
year = {2017},
volume = {105},
number = {1},
month = {February},
issn = {0017-9310},
pages = {811--825},
numpages = {14},
keywords = {Response surface methodology; Sensitivity analysis; Solar cavity receiver; Porous medium; Combined heat transfer},
}
%0 Journal Article
%T Numerical investigation and sensitivity analysis of effective parameters on combined heat transfer performance in a porous solar cavity receiver by response surface methodology
%A Milani Shirvan, Kamel
%A Mamourian, Mojtaba
%A S. Mirzakhanlari
%A R. Ellahi
%A K. Vafai
%J International Journal of Heat and Mass Transfer
%@ 0017-9310
%D 2017
