Buoyancy-Driven Heat Transfer of Water-Based Nanofluid in a Permeable Cylindrical Pipe With Navier Slip Through a Saturated Porous Medium

Khamis, Sara Abdalla; Makinde, Oluwole Daniel; Nkansah-Gyekye, Yaw

doi:10.1615/jpormedia.v18.i12.10

Cited by 13 publications

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“…He has beern reported that the maximum heat transfer rate on the plate surface had obtained with Cu/water nanofluid. Khamis et al [22] has reported a numerical analysis about waterbased Cu and Al2O3 nanofluids flowing in a permeable cylindrical pipe with Navier slip. Unsteady flow conditions were taken into account with variable thermophysical properties along the saturated porous medium in the cylinder.…”

Section: Introductionmentioning

confidence: 99%

CFD ANALYSIS OF LAMINAR FORCED CONVECTIVE HEAT TRANSFER FOR TiO2/WATER NANOFLUID IN A SEMI-CIRCULAR CROSS-SECTIONED MICRO-CHANNEL

Ekiciler¹

2019

Journal of Thermal Engineering

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In this study, forced convection flow and heat transfer characteristics of TiO2/water nanofluid flow with different nanoparticle volume fractions (1.0%, 2.0%, 3.0% and 4.0%) in semi-circular cross-sectioned micro-channel was numerically investigated. The threedimensional study was conducted under steady state laminar flow condition where Reynolds number changing from 100 to 1000. CFD model has been generated by using ANSYS FLUENT 15.0 software based on finite volume method. The flow was under hydrodynamically and thermally developing flow condition. Uniform surface heat flux boundary condition was applied at the bottom surface of the micro-channel. The average and local Nusselt number and Darcy friction factor values were obtained using numerical results. Also, the effects of using nanofluid on local values of Nusselt number and Darcy friction factor were investigated. Numerical results indicate that the increasing of nanoparticle volume fraction of nanofluid, the average Nusselt number increases; however, there is no significant variation in average Darcy friction factor.

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Section: Introductionmentioning

confidence: 99%

CFD ANALYSIS OF LAMINAR FORCED CONVECTIVE HEAT TRANSFER FOR TiO2/WATER NANOFLUID IN A SEMI-CIRCULAR CROSS-SECTIONED MICRO-CHANNEL

Ekiciler¹

2019

Journal of Thermal Engineering

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“…Among the few foundational issues regarding heat transferral in porous media, the free convection boundary layer flow from a stretching/shrinking sheet in a porous medium filled with a Powell -Eyring fluid is also one. An extensive utilization of porous media in several pragmatic utilizations could be detected in Nield and Bejan [16], Sharma et al [17], Prakash et al [18], Khamiset al [19], Chinyoka and Makinde [20]. A short time ago, Makinde and Eegunjobi [21] numerically explored the alloyed consequences of thermal radiation, magnetic field and velocity slip on Casson fluid flow through a porous medium.…”

Section: Introductionmentioning

confidence: 99%

Spectral Relaxation Method for Powell-Eyring Fluid Flow Past a Radially Stretching Heated Disk Surface in a Porous Medium

Gangadhar

Babu

Makinde

2018

DDF

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In this study we use a spectral relaxation method to investigate heat transfer in axisymmetric slip flow of a MHD Powell-Eyring fluid over a radially stretching surface embedded in porous medium with viscous dissipation. The transformed governing system of nonlinear differential equations was solved numerically using the spectral relaxation method that has been proposed for the solution of nonlinear boundary layer equations. Results were obtained for the skin friction coefficient, the local Nusselt number as well as the velocity and temperature profiles for the same values of the governing physical and fluid parameters. Validation of the results was reached by the comparison with limiting cases from previous studies in the literature. We show that the proposed technique is an efficient numerical algorithm with assured convergence that serves as an alternative to common numerical methods for solving nonlinear boundary value problems. We show that the convergence rate of the spectral relaxation method is significant improved by using the method in conjunction with the successive over - relaxation method.

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“…They found that the suction/injection Reynolds number delays fields of temperature and velocity as well as skin friction increases due to the number of Prandtl, the number of Reynolds and the slip parameter. The different effects occurred because of the porous medium shape and variable viscosity parameters Khamis et al (2015). studied on the results of buoyancy-driven force, temperature dependent viscosity and Navier slip on transfer of heat in a permeable cylindrical pipe it was found that all nanofluid velocity and temperature are intensified by Grashof number and adding nanoparticles volume fraction and minimized by increasing Navier slip parameter, viscosity , resistance and shape factor parameters of porous media Mkwizu et al (2015).…”

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confidence: 99%

Effects of navier slip and skin friction on nanofluid flow in a porous pipe

Muyungi¹

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Recent advances in cooling, filtering, heat transfer, and other processes have all focused attention on fluid flow through porous media. During the flow partial slip becomes more important at wall surfaces in improvement of performance of various devices. In this regard, the governing equation has been presented for the flow of porous pipe with Navier slip in this study also non dimensionalisation has been done. Systems of equations The governing system was expressed to ordinary differential equations, thereafter a mathematical model for the flow of nanofluids was developed. Results are presented graphically of various parameters having different values on and discussed. It is found that the velocity and temperature during the flow is inversely proportional to Navier slip also in order to overcome skin friction there is a need to increase nanoparticles.

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Buoyancy-Driven Heat Transfer of Water-Based Nanofluid in a Permeable Cylindrical Pipe With Navier Slip Through a Saturated Porous Medium

Cited by 13 publications

References 0 publications

CFD ANALYSIS OF LAMINAR FORCED CONVECTIVE HEAT TRANSFER FOR TiO2/WATER NANOFLUID IN A SEMI-CIRCULAR CROSS-SECTIONED MICRO-CHANNEL

CFD ANALYSIS OF LAMINAR FORCED CONVECTIVE HEAT TRANSFER FOR TiO2/WATER NANOFLUID IN A SEMI-CIRCULAR CROSS-SECTIONED MICRO-CHANNEL

Spectral Relaxation Method for Powell-Eyring Fluid Flow Past a Radially Stretching Heated Disk Surface in a Porous Medium

Effects of navier slip and skin friction on nanofluid flow in a porous pipe

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