Effect of Suction/Injection on Unsteady Hydromagnetic Convective Flow of Reactive Viscous Fluid between Vertical Porous Plates with Thermal Diffusion

Uwanta, I. J.; Hamza, M. M.

doi:10.1155/2014/980270

Cited by 27 publications

(29 citation statements)

References 27 publications

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“…2a and 2b display the influence of suction/injection on fluid motion; the plots reveal that both primary and secondary velocities reduce as suction/injection parameter increases. This indicates that the net effect of suction is to decrease fluid motion as submitted by Pop and Watanabe (1992) and Uwanta and Hamza (2014). Figs.…”

Section: Effect Of Thermophysical Parameters On Velocity Profilesupporting

confidence: 55%

Hall current and suction/injection effects on the entropy generation of third grade fluid

Opanuga¹,

Gbadeyan²,

Okagbue³

et al. 2018

Int. j. adv. appl. sci.

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In this work, effects of Hall current and suction/injection on a steady, viscous, incompressible and electrically conducting third grade fluid past a semi-infinite plate with entropy generation is investigated. It is assumed that the fluid motion is induced by applied pressure gradient. Hot fluid is injected with a constant velocity at the injection wall while it is sucked off at the upper wall with the same velocity. The governing equations of Navier-Stoke, energy and entropy generation obtained are non-dimensionalised, the resulting dimensionless velocity and temperature profiles are solved by Adomian decomposition technique due to the nonlinearity of the coupled system of equations. The obtained solution for the velocity profile is validated by the exact solution and the existing one in literature at M = 0 and the analytical expressions for fluid velocity and temperature are utilized to calculate the entropy generation and irreversibility ratio. Various plots are presented and discussed. It is found that increasing Hall current parameter increases primary velocity, temperature, entropy generation and Bejan number while the reverse trend is observed when both suction/injection and magnetic field parameters are increased. It is also noticed that entropy production at the upper wall is due to heat transfer.

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Section: Effect Of Thermophysical Parameters On Velocity Profilesupporting

confidence: 55%

Hall current and suction/injection effects on the entropy generation of third grade fluid

Opanuga¹,

Gbadeyan²,

Okagbue³

et al. 2018

Int. j. adv. appl. sci.

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show abstract

“…Note that a and c Computational design Keller box method is used to solve the non-linear ODE (18) and (19) subject to boundary conditions eq. (20). This scheme is unconditionally stable and achieves exceptional accuracy.…”

mentioning

confidence: 93%

“…Investigation of a micro-polar fluid with radiation is considered by Rashidi and Abbasbandy [19]. Uwanta and Hamza [20] investigated time dependent convective flow between porous plates with thermal and suction/injection effects. The unsteady nanofluid flow is examined by Kandasamy and Muhaimin [21].…”

Section: Introductionmentioning

confidence: 99%

Unsteady transport of MHD mixed convection inspired by thermal radiation and partial slip performance: Finite difference approach

et al. 2019

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Background: In this article mixed convection boundary layer flow of MHD fluid on permeable stretching surface is investigated under the effects of velocity and thermal slip. The physical unsteady problem is examined by considering thermal radiation effects on momentum and thermal boundary-layer flow. Different from available literature, in the present study we consider mix convective flow, thermal radiation, transverse applied magnetic field, velocity, and thermal slip. Methodology: The transform non-linear system of differential equation is tackled numerically by the aid of finite difference scheme named as Keller-Box. Stable solution is correct up to six decimal places and special cases overlaps with the existing results in literature validating the present analysis. Conclusion: It is concluded that mixed convection leads to accelerate fluid-flow and reduce temperature profile. Injection contributes in rising magnitude of velocity and temperature when compared with suction effects. Velocity and thermal slip parameter influence in lowering fluid-flow while temperature profile decrease for velocity slip parameter and opposite trend is witness corresponding to thermal slip parameter. Both velocity and temperature are increasing function of thermal radiation. In addition, the skin friction coefficient and the local Nusselt number are tabulated and analyzed. Novelty: Present study is concerned with fluid-flow applications in plastic films, polymer extrusion, glass fiber, metallurgical processes, and metal spinning.

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“…This can lead to enhanced heating or cooling of the system and can help to delay the transition from laminar to turbulent flow. Moreover, suction or injection on the boundary layer flow control played a significant role in the area of aerodynamics and space sciences 15 . Due to these practical applications of suction or injection fluid flow, many scholars diverted their attention in this area 14,16‐19 …”

Section: Introductionmentioning

confidence: 99%

Nonlinear convective boundary layer flow of micropolar‐couple stress nanofluids past permeable stretching sheet using Cattaneo‐Christov heat and mass flux model

Ibrahim

Gadisa

2020

Heat Trans

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The present work aims to examine the effects of viscous dissipation and unsteadiness parameters on nonlinear convective laminar boundary layer flow of micropolar‐couple stress nanofluid past a permeable stretching sheet with non‐Fourier heat flux model in the presence of suction/injection variable. The unsteadiness in the flow, temperature, and concentration profile is caused by the time‐dependence of the stretching velocity, surface temperature, and surface concentration of the boundary layer flow. Similarity transformation is applied to transform the time‐dependent boundary layer flow equations into the corresponding highly nonlinear coupled ordinary differential equations with appropriate boundary conditions. The robust numerical technique called Galerkin finite element method is used to solve the obtained dimensionless governing equations of the flow. The effects of Eckert number, unsteadiness parameter, suction/injection parameter, mixed convection parameter, material parameter, Schmidt number, and couple stress parameter on linear velocity, angular velocity, temperature, concentration, local skin friction coefficient, local wall couple stress, local Nusselt number, and local Sherwood number is analyzed with the help of graphical and tabular form. Under special conditions, the present result is compared with the existing literature and revealed good agreement. Our result shows that as unsteadiness parameter boost, both heat and mass transfer rate rises. The present study has a significant application in material processing technology.

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Effect of Suction/Injection on Unsteady Hydromagnetic Convective Flow of Reactive Viscous Fluid between Vertical Porous Plates with Thermal Diffusion

Cited by 27 publications

References 27 publications

Hall current and suction/injection effects on the entropy generation of third grade fluid

Hall current and suction/injection effects on the entropy generation of third grade fluid

Unsteady transport of MHD mixed convection inspired by thermal radiation and partial slip performance: Finite difference approach

Nonlinear convective boundary layer flow of micropolar‐couple stress nanofluids past permeable stretching sheet using Cattaneo‐Christov heat and mass flux model

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