2013
DOI: 10.3390/e15010144
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Numerical Study of Entropy Generation in a Flowing Nanofluid Used in Micro- and Minichannels

Abstract: This article mainly concerns theoretical research on entropy generation influences due to heat transfer and flow in nanofluid suspensions. A conventional nanofluid of alumina-water (Al 2 O 3 -H 2 O) was considered as the fluid model. Due to the sensitivity of entropy to duct diameter, mini-and microchannels with diameters of 3 mm and 0.05 mm were considered, and a laminar flow regime was assumed. The conductivity and viscosity of two different nanofluid models were examined with the help of theoretical and exp… Show more

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Cited by 69 publications
(29 citation statements)
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“…Therefore, in this paper, a numerical study is performed to investigate the heat transfer coefficient, pressure drop, friction factor, and needed pumping power for graphene nanoplatelets-silver (GNP-silver) water-based nanofluid at various solid volume fractions flowing through a rectangular duct. The results from the present study may find applications for a high performance coolant in corrugated plate heat exchangers [16], solar collectors and electronic devices [17].…”
Section: Introductionmentioning
confidence: 96%
“…Therefore, in this paper, a numerical study is performed to investigate the heat transfer coefficient, pressure drop, friction factor, and needed pumping power for graphene nanoplatelets-silver (GNP-silver) water-based nanofluid at various solid volume fractions flowing through a rectangular duct. The results from the present study may find applications for a high performance coolant in corrugated plate heat exchangers [16], solar collectors and electronic devices [17].…”
Section: Introductionmentioning
confidence: 96%
“…Entropy generation due to heat and fluid flow in backward facing step flow with various expansion ratios was studied by Abu-Nada [19]. Further analysis can be found [20][21][22][23][24].…”
Section: Introductionmentioning
confidence: 99%
“…The first part is the entropy generation due to finite temperature difference (Nscond) and the second part is the entropy generation due to viscous effects (Nsvisc). The Bejan number is defined as [17][18][19][20][21][22][23][24] . …”
Section: Viscous Dissipation and Entropy Generationmentioning
confidence: 99%
“…Rashidi et al [26,27] analyzed entropy generation in a steady MHD flow due to a rotating porous disk in a nanoluid and convective MHD flow of third grade non-Newtonian fluid over a stretching sheet. A few pertinent studies on said topic are mentioned in [28][29][30][31][32].…”
Section: Introductionmentioning
confidence: 99%