Entropy generation analysis for nanofluid flow inside a duct equipped with porous baffles

Shamsabadi, Hamid; Rashidi, Saman; Esfahani, Javad Abolfazli

doi:10.1007/s10973-018-7350-4

Cited by 75 publications

(13 citation statements)

References 41 publications

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“…For equation (13), the first term of the right hand side is the pressure gradient, second term is inertia force, third term is porosity, and fifth term is drag force. Similarly, forequation (14), first term of right hand side is thermal diffusion, second term is viscous dissipation, third and fourth terms are the Joule dissipations due to magnetic and electric field, fifth term is Darcy dissipation due to the inclusion of porosity and the last term is drag force.…”

Section: Flow Analysismentioning

confidence: 99%

“…The efficient use of energy and the best possible use of resources prompted inquiries to improve the efficiency of industrial procedures. Several recent studies are reported [8][9][10][11][12][13][14] which explore the results of entropy analysis. Because of the vast applications in several industries, micro-fluids have gained considerable attention over the last few decades.…”

Section: Introductionmentioning

confidence: 99%

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Peristaltic pumping through non-Darcy porous medium in an electroosmotic flow with entropy analysis

Gajbhare¹,

Prasad²,

Mishra³

2020

Nanosystems: Phys. Chem. Math.

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Pumping of peristaltic fluid is a vehicle via liquid that is accomplished due to a dynamic rush through a distensible cylinder containing liquids which extends along its length. Peristaltic pumping occurs in a lower pressure region to a higher pressure region. As a principle of peristaltic pumping, various applications are used for the blood pumping in different parts of the human body, pharmacological drug delivery systems and in industries, sanitary fluid transport, etc. Therefore, peristaltic pumping via a non-Darcy porous medium in an electroosmotic flow has been discussed in the current investigation. To exhibit the existence of a porous medium, Darcy Forchheimer model is deployed. The electro-magnetohaydrodynamic flow of fluid passing a symmetric channel and the novelty of the study are due to the entropy analysis. Analytical approach such as perturbation technique is employed to reduce the higher order coupled transformed equation into its lower order decoupled form and then numerical treatment is made to obtain the approximate solutions. The characteristics of the contributing parameters are presented via graphs and the numerical computations are exhibited through tabular form. Present outcome warrants a good correlation with earlier result in particular case. However, the main findings are elaborated in the results and discussion section.

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Section: Flow Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Peristaltic pumping through non-Darcy porous medium in an electroosmotic flow with entropy analysis

Gajbhare¹,

Prasad²,

Mishra³

2020

Nanosystems: Phys. Chem. Math.

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“…The systems with the least entropy generations could be taken into consideration as an optimal system. Shamsabadi et al [31] carried out a numerical study on the entropy generation of nanofluids flows inside a channel equipped by porous baffles. They found that raising the number of baffles from 4 to 16, decreases the thermal and frictional entropy generations by 14 and 32%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Entropy generation of turbulent Cu–water nanofluid flows inside thermal systems equipped with transverse-cut twisted turbulators

Nakhchi

Rahmati

2020

J Therm Anal Calorim

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“…This goal can be achieved through the use of nanofluids, which are prepared by suspending nanoparticles with sizes typically of 1-100 nm in conventional heat transfer fluids such as water, oil, and ethylene glycol [5][6][7][8]. This term was first suggested by Choi [9] in 1995, and it has since gained in popularity [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning
confidence: 99%

Impact of variable fluid properties on forced convection of Fe3O4/CNT/water hybrid nanofluid in a double-pipe mini-channel heat exchanger
Shahsavar
¹
,
Godini
²
,
Talebizadehsardari
³

et al. 2019
J Therm Anal Calorim
129
0
23
0
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The objective of this study is to assess the hydrothermal performance of a non-Newtonian hybrid nanofluid with temperature-dependent thermal conductivity and viscosity compared with a Newtonian hybrid nanofluid with constant thermophysical properties. A counter-current doublepipe mini-channel heat exchanger is studied to analyze the effects of hybrid nanofluid. The nanofluid is employed as the coolant in the tube side while the hot water flows in the annulus side.Two different nanoparticles including Tetra Methyl Ammonium Hydroxide (TMAH) coated Fe3O4 (magnetite) nanoparticles and Gum Arabic (GA) coated Carbon Nanotubes (CNTs) are used to prepare the water based hybrid nanofluid. The results demonstrated that the non-Newtonian hybrid nanofluid always has a higher heat transfer rate, overall heat transfer coefficient, effectiveness, and performance index than those of the Newtonian hybrid nanofluid, while the opposite is true for pressure drop and pumping power. Supposing that the Fe3O4-CNT/water hybrid nanofluid is a Newtonian fluid with constant thermal conductivity and viscosity, leads to a large error in the

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Entropy generation analysis for nanofluid flow inside a duct equipped with porous baffles

Cited by 75 publications

References 41 publications

Peristaltic pumping through non-Darcy porous medium in an electroosmotic flow with entropy analysis

Peristaltic pumping through non-Darcy porous medium in an electroosmotic flow with entropy analysis

Entropy generation of turbulent Cu–water nanofluid flows inside thermal systems equipped with transverse-cut twisted turbulators

Impact of variable fluid properties on forced convection of Fe3O4/CNT/water hybrid nanofluid in a double-pipe mini-channel heat exchanger

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