A review of entropy generation in nanofluid flow

Mahian, Omid; Kianifar, Ali; Kleinstreuer, Clement; Al‐Nimr, M. A.; Pop, Ioan; Sahin, Ahmet Z.; Wongwises, Somchai

doi:10.1016/j.ijheatmasstransfer.2013.06.010

Cited by 443 publications

(148 citation statements)

References 83 publications

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“…0.04. When the thermal conductivity of the particle is over 100 times larger than that of base fluid, the thermal conductivity in the sense of macroscopic effective medium theory known as Maxwell model [34] which is given as:…”

Section: Entropy Generationmentioning

confidence: 99%

Analysis of Entropy Generation in the Flow of Peristaltic Nanofluids in Channels With Compliant Walls

Abbas

Bai

Rashidi

et al. 2016

Entropy

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Section: Entropy Generationmentioning

confidence: 99%

Analysis of Entropy Generation in the Flow of Peristaltic Nanofluids in Channels With Compliant Walls

Abbas

Bai

Rashidi

et al. 2016

Entropy

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“…Convection of nanofluids in porous media is as an attractive area for heat transfer and thermodynamic research communities [1,2]. Free convection of nanofluids in porous media has already received significant attention [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…However, the equivalent problem under forced and mixed convection is relatively much less investigated. In particular, evaluation of thermodynamic irreversibilities encountered during forced convection of nanofluids in porous media has been identified as an underdeveloped area demanding more research [2]. The general problem of forced convection of nanofluids through porous media has been, so far, visited by few researchers [5].…”

Section: Introductionmentioning

confidence: 99%

Mixed convection and thermodynamic irreversibilities in MHD nanofluid stagnation-point flows over a cylinder embedded in porous media

Alizadeh

Karimi

Arjmandzadeh

et al. 2018

J Therm Anal Calorim

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The impingement of CuO-water nanofluid flows upon a cylinder subject to a uniform magnetic field with constant surface temperature and embedded in porous media is investigated for the first time in literature. The surface of the cylinder can feature uniform or non-uniform mass transpiration and is hotter than the incoming nanofluid flow. The gravitational effects are taken into account and the three-dimensional governing equations of mixed convection in curved porous media, under magnetohydrodynamic effects, are reduced to those solvable by a finite difference scheme. Through varying a mixed convection parameter, the situations dominated by forced, mixed and free convection are examined systematically. The numerical solutions of these equations reveal the flow velocity and temperature fields as well as the Nusselt number and induced shear stress. These are then used to calculate the rate of entropy generation within the system by viscous and heat transfer irreversibilities. The results show that Nusselt number increases with increasing the concentration of nanoparticles, while it slightly deceases through intensifying the magnetic parameter. Non-uniform transpiration is shown to strongly affect the average rate of heat transfer. Importantly, it is demonstrated that the specific mode of heat convection can majorly influence the intensity of entropy generation and that the irreversibilities are much larger under natural convection compared to those in mixed and forced convection. Calculation of Bejan number shows that this is due to more pronounced relative contribution of viscous irreversibilities when free convection effects dominate the mixed convection process.

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“…In recent years there has been a growing interest in 8 understanding the entropic behaviour of nanofluids and porous systems [12,29,30]. Nonetheless, entropic 9 analysis of composite nanofluid-porous systems has, so far, received limited attention [31] and there are only a 10 few recent studies in this area [30,32,33,34]. Many configurations and conditions still remain to be analysed…”

mentioning

confidence: 99%

Theoretical investigation of entropy generation and heat transfer by forced convection of copper–water nanofluid in a porous channel — Local thermal non-equilibrium and partial filling effects

2016

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Torabi, M., Dickson, C., and Karimi, N. (2016) Theoretical investigation of entropy generation and heat transfer by forced convection of copper-water nanofluid in a porous channel -local thermal non-equilibrium and partial filling effects. Powder Technology, 301, pp. 234-254.There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.

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A review of entropy generation in nanofluid flow

Cited by 443 publications

References 83 publications

Analysis of Entropy Generation in the Flow of Peristaltic Nanofluids in Channels With Compliant Walls

Analysis of Entropy Generation in the Flow of Peristaltic Nanofluids in Channels With Compliant Walls

Mixed convection and thermodynamic irreversibilities in MHD nanofluid stagnation-point flows over a cylinder embedded in porous media

Theoretical investigation of entropy generation and heat transfer by forced convection of copper–water nanofluid in a porous channel — Local thermal non-equilibrium and partial filling effects

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