An exact analysis of unsteady MHD free convection flow of some nanofluids with ramped wall velocity and ramped wall temperature accounting heat radiation and injection/consumption

Anwar, Talha; Watthayu, Wiboonsak

doi:10.1038/s41598-020-74739-w

Cited by 31 publications

(20 citation statements)

References 56 publications

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“…There are studies about constant wall temperature boundary condition. Anwar et al, [34] evaluate the physical effects of application of simultaneous ramped wall velocity and ramped wall temperature condition on unsteady, MHD convection flow of some nanofluids over an infinite vertical plate. The Darcy's law is applied to encounter the porosity of the medium and found that the temperature, velocity, shear stress and rate of heat transfer, respective profile behaves in a similar manner for both ramped wall and isothermal wall boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Aligned Magnetohydrodynamics (MHD) Flow of Hybrid Nanofluid Over a Vertical Plate Through Porous Medium

Nayan

Fauzan²,

Ilias

et al. 2022

ARFMTS

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The future research on hybrid nanofluids need to be done as there are many applications of hybrid nanofluids. Some of them are electro-mechanical, renewable energy and manufacturing process application and also the application in automotive cooling. Therefore, this numerical study is conducted to investigate the aligned magnetohydrodynamics (MHD) flow of hybrid nanofluid over a vertical plate through a porous medium. The base fluid (water), silver and copper oxide flowed over a vertical plate in the presence of MHD and porous medium with boundary conditions of constant wall temperature by taking a few types of parameters into consideration. By using similarity transformation, the governing nonlinear partial differential equations are transformed into nonlinear ordinary differential equations. Keller Box method is applied to solve numerically the nonlinear ordinary differential equations and the system is solved by using Fortran programming. The results of the study are illustrated graphically to show the behavior of velocity and temperature also skin friction and Nusselt number of hybrids nanofluid affected by the parameters. It is found that the velocity profiles increase, and temperature profiles decrease when the angle of aligned magnetic field, the interaction of magnetic parameter and local Grashof number increase while the velocity profiles decrease, and temperature profiles increase when the porous parameter and volume fraction of nanoparticles parameter increase. Besides, the skin friction of Ag-CuO-water is less than CuO-water and Nusselt number of Ag-CuO-water is higher than CuO-water.

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Section: Introductionmentioning

confidence: 99%

Aligned Magnetohydrodynamics (MHD) Flow of Hybrid Nanofluid Over a Vertical Plate Through Porous Medium

Nayan

Fauzan²,

Ilias

et al. 2022

ARFMTS

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“…Akram and Nadeem 5 examined the effects of a magnetic field and heat transfer on two-dimensional Jaffrey fluid peristaltic motion in an asymmetric channel. The effect of heat radiation along with ramped wall boundary conditions on the fluid flow was studied by Anwar et al 6 Khan et al 7 investigated free convection Maxwell fluid flow with ramping wall temperature and concentration. Through an infinite isothermal vertical plate, Soundergekar 8 calculated the exact solution to the viscous flow problem.…”

Section: Introductionmentioning

confidence: 99%

A time fractional model of Brinkman-type nanofluid with ramped wall temperature and concentration

Hasin

Ahmad

Ali

et al. 2022

Advances in Mechanical Engineering

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Nanofluid is an innovative heat transfer fluid with the potential to significantly enhance the heat transfer performance of traditional fluids. By adding various types of nanoparticles to ordinary base fluids, several attempts have been made to boost the rate of heat transfer and thermal conductivity. The unsteady electrically conducting flow of Brinkman-type nanofluid over an infinite vertical plate with ramping wall temperature and concentration is investigated in this article. Water is taken as the base fluid, and multi-walled carbon nanotubes are distributed equally throughout it. The Caputo-Fabrizio fractional derivative, which has a non-singular kernel, is used to generalize the classical model. The Laplace transform technique has been utilized to achieve exact solutions. Furthermore, various graphs for fractional and physical parameters are used to represent the solutions. All figures are drawn for both conditions, that is, ramped and isothermal wall temperature and concentration. The velocity field increases for greater values of thermal and mass Grashof numbers while the reverse effect is observed for Hartman number, Brinkman parameter and volume fraction. Moreover, the obtained results are also reduced to the already published results in order to show the validation of the present results. The results are used to calculate the skin friction, Nusselt number, and Sherwood number. The heat transfer of pure water is increased by 17.03% when 4% of nanoparticles are added to it which will of course increase the efficiency of solar collectors and solar pools. Moreover, the mass transfer decreases by 3.18% when 4% of nanoparticles which are dispersed in it.

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“…The heat source effect on the MHD boundary layer flow of nanofluid over a vertical surface is numerically analyzed by Chamkha and Aly 38 . Some of the recently captured studies on this topic are due to Hussein et al, 39 Yadav et al, 40,41 Hayat et al, 42 Venkateswarlu et al, 43 Li et al, 44 Sheikholeslami, 45 Rashed et al, 46 Yadav, 47,48 Khan et al, 49 Jafar et al, 50 and Anwar et al 51 Yadav and Lee, 52 Yadav et al, 53 and Ramzan et al 54 examined the consequences of Hall current on MHD flow of nanofluids under different considerations with flow geometries. The joint effects of Hall current along with the gyratory motion of an inclined surface on the movement of titania nanofluids with various base fluids are investigated and presented by Shah et al 4 …”

Section: Introductionmentioning

confidence: 99%

Significance of Hall effect on heat and mass transport of titanium alloy‐water‐based nanofluid flow past a vertical surface with IMF effect

2021

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In this mathematical presentation, we examined the significance of Hall current on MHD buoyancy‐driven boundary layer flow of a Ti6Al4V‐H2O based nanofluid past a vertical surface implanted in a uniform permeable region. The vertical surface is considered to be magnetized and induced magnetic field (IMF) impacts are also considered. The nondimensional flow model is solved with the assistance of the two‐term perturbation scheme. Various results are obtained by numerical computation for different significant parameters. These results are presented and analyzed in graphical and tabular form. In the boundary layer domain, the transpiration velocity across the surface tends to diminish the main flow, IMF along the main flow, fluid temperature, and concentration. It is remarkably noted that IMF along the main flow grows for incrementing values of volume fraction coefficient of nanofluid. In the magnetic boundary layer domain, the main flow and IMF along the main flow grow with Hall current. Furthermore, it is seen that for the progressing values of magnetic Prandtl number, the main flow reduces while normal flow and IMF along the main flow is induced in the boundary layer domain.

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An exact analysis of unsteady MHD free convection flow of some nanofluids with ramped wall velocity and ramped wall temperature accounting heat radiation and injection/consumption

Cited by 31 publications

References 56 publications

Aligned Magnetohydrodynamics (MHD) Flow of Hybrid Nanofluid Over a Vertical Plate Through Porous Medium

Aligned Magnetohydrodynamics (MHD) Flow of Hybrid Nanofluid Over a Vertical Plate Through Porous Medium

A time fractional model of Brinkman-type nanofluid with ramped wall temperature and concentration

Significance of Hall effect on heat and mass transport of titanium alloy‐water‐based nanofluid flow past a vertical surface with IMF effect

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