Numerical Optimization for Nanofluid Flow in Microchannels Using Entropy Generation Minimization

Yang, Yue-Tzu; Wang, Yi-Hsien; Huang, Bo-Ying

doi:10.1080/10407782.2014.937282

Cited by 36 publications

(13 citation statements)

References 28 publications

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“…• Generation of entropy due to HT was found to be three times higher than that of friction, for the trapezoidal MC. Yang et al (2015) studied the incompressible, laminar and steady flow of the CuO-water NF through the trapezoidal MCHS for optimisation. Numerical simulations were performed for different inlet velocities and different φ of the NP in the NF under the CWHF (q″ = 200,000 W/m 2 ).…”

Section: Observationsmentioning

confidence: 99%

Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

Kumar

Bharj

2020

IJEX

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This work presents a detailed review of the entropy generation due to the heat transfer and the fluid flow through different channels. The earlier contribution of the researchers in the form of theoretical, numerical and experimental studies on the entropy generation in the conventional or microchannels, with or without disruption in the flow and with or without the use of nanofluids is reviewed. The brief discussion on the microchannels, disrupted microchannels, nanofluids and entropy generation is presented. Studies performed on the channel cross-sectional shapes and rib shapes for thermal performance optimisation are discussed in the paper. Nanoparticles such as Al2O3, Cu, CuO, Ag, SiO2, etc. have been used for preparing the nanofluids along with water, ethylene glycol, etc. as base fluids. Additionally, the effect of disruption in flow field on the entropy generation is also discussed. The disruptions in the form of ribs, cavities, vortex generators, etc. have been taken into account. It is hoped that this review article can provide a basis for further research on the irreversibility analysis of the nanofluid flowing through disrupted microchannels to improve the hydrodynamic and thermal performance of the system.

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Section: Observationsmentioning

confidence: 99%

Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

Kumar

Bharj

2020

IJEX

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“…The convergence criteria and step size are chosen as 10 À6 and r ¼ 0:001. From the process of numerical computation, we obtain the entropy generation rate, and the Bejan number as given by equations (11) and (12).…”

Section: Solution Proceduresmentioning

confidence: 99%

“…Hossain et al 3 studied the effect of radiation on free convection from porous vertical plates. Yang et al 11 demonstrated the numerical optimization of the three-dimensional incompressible laminar Fow of a trapezoidal microchannel heat sink using entropy generation minimization. The transient velocity and steady state entropy generation in a microfluidic Couette flow influenced by the electro-kinetic effect of charged nanoparticles has been studied by Gorla and Gireesha.…”

Section: Introductionmentioning

confidence: 99%

Entropy generation and heat transport analysis of Casson fluid flow with viscous and Joule heating in an inclined porous microchannel

Gireesha

Srinivasa

Shashikumar

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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The combined effects of the magnetic field, suction/injection, and convective boundary condition on heat transfer and entropy generation in an electrically conducting Casson fluid flow through an inclined porous microchannel are scrutinized. The temperature-dependent heat source is also accounted. Numerical simulation for the modelled problem is presented via Runge–Kutta–Felhberg-based shooting technique. Special attention is given to analyze the impact of involved parameters on the profiles of velocity [Formula: see text], temperature [Formula: see text], entropy generation [Formula: see text], and Bejan number [Formula: see text]. It is established that entropy generation rate decreases at the walls with an increase in Hartmann number [Formula: see text], while it increases at the center region of the microchannel.

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“…Nanoﬂuid ﬂow in a microchannel is a part of microﬂuidics and nanotechnology and has the potential for significant applications in a nanodrug and microscale cooling. Yang et al demonstrated the numerical optimization of the 3D incompressible laminar ﬂow of a trapezoidal microchannel heat sink using entropy generation minimization. Heat transfer and entropy generation analysis of MHD nanofluid flow in a parallel plate microchannel was investigated by Abbaszadeh et al The MHD heat transfer and entropy generation in the transport of nanofluid through a porous vertical microchannel, in the presence of nonlinear radiative heat flux, was numerically investigated by Lopez et al In this context, various authors have explored the heat transfer of fluid at microscale with different aspects …”

Section: Introductionmentioning

confidence: 99%

Brinkman‐Forchheimer slip flow subject to exponential space and thermal‐dependent heat source in a microchannel utilizing SWCNT and MWCNT nanoliquids

Shehzad

Mahanthesh

Gireesha

et al. 2019

Heat Trans. Asian Res.

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This communication examines the impact of carbon nanotubes (single-wall carbon nanotubes [SWCNT] and multi-wall carbon nanotubes [MWCNT]) on magnetohydrodynamic Brinkman and Forchheimer flow in a planar microchannel with multiple slips. Flow through a porous medium is modeled via Brinkman and Forchheimer theory. The impacts of thermal-dependent heat source (THS) and exponential space-dependent heat source (ESHS) are deployed. Aspects of Joule and viscous dissipations are also retained. The dimensionless equations are solved using the Runge-Kutta-Fehlberg joint with shooting methodology. The significance of various nondimensional parameters on the flow distributions as well as skin-friction and Nusselt number is illustrated and analyzed. Closed form solution of momentum quantity is developed for a particular case. Obtained numerical results are in perfect agreement with analytical results. Further, the results of SWCNT and MWCNT are compared. K E Y W O R D S Brinkman-Forchheimer model, carbon nanofluid, carbon nanotubes, exponential heat source, Joule heating, microchannel Heat Transfer-Asian Res. 2019;48:1688-1708. wileyonlinelibrary.com/journal/htj 1688 |

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Numerical Optimization for Nanofluid Flow in Microchannels Using Entropy Generation Minimization

Cited by 36 publications

References 28 publications

Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

Entropy generation and heat transport analysis of Casson fluid flow with viscous and Joule heating in an inclined porous microchannel

Brinkman‐Forchheimer slip flow subject to exponential space and thermal‐dependent heat source in a microchannel utilizing SWCNT and MWCNT nanoliquids

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