Unsteady flow of a reactive variable viscosity non-Newtonian fluid through a porous saturated medium with asymmetric convective boundary conditions

Makinde, Oluwole Daniel; Chinyoka, T.; Rundora, Lazarus

doi:10.1016/j.camwa.2011.08.049

Cited by 58 publications

(26 citation statements)

References 15 publications

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“…Postelnicu [5] investigated the combined effects of magnetic fields, thermal-diffusion and diffusion-thermo on heat and mass transfer by natural convection from vertical surfaces in porous media. Other studies on flow and heat transfer in porous media can be found in [6][7][8]. Meanwhile, the current trend of analysing flow and heat transfer is to apply a Second Law (of Thermodynamics) analysis, and its design-related concept of entropy generation minimization (EGM).…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media

Makinde

Eegunjobi

2013

Entropy

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Abstract:The present work investigates numerically the inherent irreversibility in a steady flow of a couple stress fluid through a vertical channel packed with saturated porous substances. The First and Second Laws of Thermodynamics are applied to analyze the problem. The nonlinear governing equations in Cartesian coordinates are obtained and solved numerically using shooting methods together with a Runge-Kutta Fehlberg integration scheme. The entropy generation number is computed by utilizing the velocity and temperature profiles. The effects of various physical parameters on the flow and heat transfer characteristics, as well as entropy generation rates and Bejan number, are investigated through graphs.

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Section: Introductionmentioning

confidence: 99%

Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media

Makinde

Eegunjobi

2013

Entropy

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“…The series solutions are shown to be convergent and twice differentiable (see Tables 1 and 2). Next, we establish the uniqueness solution of (20). It is well known that the Lipschitz condition is sufficient for the uniqueness of solution.…”

Section: (17)mentioning

confidence: 99%

“…From applications' point of view, studies on transport reactive fluids in porous media are very important since they occur in many important areas like water treatment using fixed beds, agriculture, oil recovery, ground water flows, geothermal engineering, exhaust systems in combustion, material processing, and reservoir engineering. Recently, Rundora and his associates [20][21][22] documented several investigations on unsteady reactive fluid flow in porous medium and how the flow evolved to the steady state. Bég et al [23] examined the flow of viscoelastic fluid through a non-Darcian porous medium.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Analysis of a Reactive Viscous Flow through a Channel Filled with a Porous Medium

Adesanya

Falade

Ukaegbu

et al. 2016

Journal of Mathematics

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An investigation has been carried out to study entropy generation in a viscous, incompressible, and reactive fluid flowing steadily through a channel with porous materials. Approximate solutions for both velocity and temperature fields are obtained by using a rapidly convergent Adomian decomposition method (ADM). These solutions are then used to determine the heat irreversibility and Bejan number of the problem. Variations of other important fluid parameters are conducted, presented graphically, and discussed.

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“…Nadeem et al [37] presented the heat and mass transfer in Jeffrey nanofluid. Makinde et al [38] deliberated the unsteady fluid flow with convective boundary conditions. Sheikholeslami [39] discussed the hydro-thermal behavior of nanofluids flow because of its external heated plates.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cattaneo–Christov Heat Flux on MHD Jeffrey, Maxwell, and Oldroyd-B Nanofluids with Homogeneous-Heterogeneous Reaction

et al. 2019

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This research article deals with the determination of magnetohydrodynamic steady flow of three combile nanofluids (Jefferey, Maxwell, and Oldroyd-B) over a stretched surface. The surface is considered to be linear. The Cattaneo–Christov heat flux model was considered necessary to study the relaxation properties of the fluid flow. The influence of homogeneous-heterogeneous reactions (active for auto catalysts and reactants) has been taken in account. The modeled problem is solved analytically. The impressions of the magnetic field, Prandtl number, thermal relaxation time, Schmidt number, homogeneous–heterogeneous reactions strength are considered through graphs. The velocity field diminished with an increasing magnetic field. The temperature field diminished with an increasing Prandtl number and thermal relaxation time. The concentration field upsurged with the increasing Schmidt number which decreased with increasing homogeneous-heterogeneous reactions strength. Furthermore, the impact of these parameters on skin fraction, Nusselt number, and Sherwood number were also accessible through tables. A comparison between analytical and numerical methods has been presented both graphically and numerically.

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Unsteady flow of a reactive variable viscosity non-Newtonian fluid through a porous saturated medium with asymmetric convective boundary conditions

Cited by 58 publications

References 15 publications

Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media

Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media

Mathematical Analysis of a Reactive Viscous Flow through a Channel Filled with a Porous Medium

Influence of Cattaneo–Christov Heat Flux on MHD Jeffrey, Maxwell, and Oldroyd-B Nanofluids with Homogeneous-Heterogeneous Reaction

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