Title : ( Entropy generation analysis of nanofluid flow over a spherical heat source inside a channel with sudden expansion and contraction )
Authors: davoud nouri , Mohammad Passandideh-Fard , Mohammad Javad Oboodi , Omid Mahian , Ahmet Z. Sahin ,
Full TextAbstract
The present paper deals with entropy generation study of CuO/water nanofluid flow over a spherical heat source that is installed inside a cylindrical channel with sudden expansion and contraction. To estimate the entropy generation rate; first, the governing equations are solved numerically to find the velocity and temperature fields in the domain where the flow is steady and laminar. Next, using the simulation data, the entropy generation number is calculated theoretically. The effects of nanofluid concentration, nanoparticle size, blockage ratio, and Reynolds number on the entropy generation have been investigated. The outcomes of this research elucidate that entropy generation number rises with an increase in the nanoparticle volume fraction and surface temperature of the heat source. On the other hand, it was found that the entropy generation is diminished by implementing finer nanoparticles and lowering the blockage ratio. In this study, a new correlation has also been presented to calculate the Nusselt number that is a function of Reynolds number, Prandtl number, and blockage ratio.
Keywords
, Entropy generation, Nanofluid, Spherical heat source, Blockage ratio, Nanoparticle size
@article{paperid:1067532,
author = {Nouri, Davoud and Passandideh-Fard, Mohammad and Mohammad Javad Oboodi and Mahian, Omid and Ahmet Z. Sahin},
title = {Entropy generation analysis of nanofluid flow over a spherical heat source inside a channel with sudden expansion and contraction},
journal = {International Journal of Heat and Mass Transfer},
year = {2018},
volume = {116},
number = {1},
month = {January},
issn = {0017-9310},
pages = {1036--1043},
numpages = {7},
keywords = {Entropy generation; Nanofluid; Spherical heat source; Blockage ratio; Nanoparticle size},
}
%0 Journal Article
%T Entropy generation analysis of nanofluid flow over a spherical heat source inside a channel with sudden expansion and contraction
%A Nouri, Davoud
%A Passandideh-Fard, Mohammad
%A Mohammad Javad Oboodi
%A Mahian, Omid
%A Ahmet Z. Sahin
%J International Journal of Heat and Mass Transfer
%@ 0017-9310
%D 2018
