Unsteady MHD Free Convective Flow of a Visco-Elastic Fluid Past an Infinite Vertical Porous Moving Plate with Variable Temperature and Concentration

Babu, K. Ramesh; Parandhama, A.; Raju, K. Venkateswara; Raju, M. C.; Narayana, P. V. Satya

doi:10.1007/s40819-017-0306-8

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…Viscoelastic (Walters'-B) fluid is an example of such a fluid. The magnetic action to the flow of viscoelastic fluid is excellently represented in the research papers of Hayat et al (2004), Hayat and Nawaz (2011), Turkyilmazoglu (2011), Attia (2011, Sivaraj and Kumar (2012), Khan et al (2012), Mishra et al (2013), Choudhary and Das (2014), Li et al (2016), Krishna and Reddy (2016), Abdel-Rahman Rashed and El-fayez (2016), Ali et al (2017), Ramesh Babu et al (2017) and Singh et al (2018a). Lighthill (1954) was first over seen that the unsteadiness in the flow system is not only arising due to motion of the surface but it may be cause because of time varying motion of the free-stream also.…”

Section: Introductionmentioning

confidence: 99%

Hydromagnetic free convective flow of Walters’-B fluid over a vertical surface with time varying surface conditions

Singh

Seth

Begum

et al. 2020

WJE

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Purpose In the present investigation, hydromagnetic boundary layer flow of Walters’-B fluid over a vertical porous surface implanted in a porous material under the action of a strong external applied magnetic field and rotation is presented. In several industrial applications, the external applied magnetic field is strong enough to produce Hall and ion-slip currents. Thus, the influence of Hall and ion-slip currents is also considered in this analysis. The flow through configuration is generated because of time varying motion of the free-stream and buoyancy action. Design/methodology/approach Regular perturbation scheme is used to obtain the solution of the system of coupled partial differential equations representing the mathematical model of the problem. Numerical computation has been performed to notice the change in flow behavior and the numerical results for velocity field, temperature field, species concentration, skin friction, rate of heat and mass transfer are presented through graphs and tables. Findings An important fact noticed that the exponential time varying motion of the free-stream induces reverse flow in the direction perpendicular to the main flow. Rising values of the strength of the applied magnetic field give increment in the fluid velocity in the neighbourhood of the vertical surface, this may cause because of the exponential motion of the free-stream. The behaviour of the Darcian drag force is similar as magnetic field on fluid flow. Originality/value In literature, very less research works are available on Walters’-B fluid where unsteadiness in the system occurs because of time varying motion of the free-stream. In this paper, the authors have made an attempt to study the action of Hall and ion-slip currents, rotation and external applied magnetic field on hydromagnetic boundary layer flow of Walters’-B fluid over a vertical surface implanted in a porous material.

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Section: Introductionmentioning

confidence: 99%

Hydromagnetic free convective flow of Walters’-B fluid over a vertical surface with time varying surface conditions

Singh

Seth

Begum

et al. 2020

WJE

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“…Mishra et al 14 explained MHD viscoelastic fluid with time‐dependent suction through a porous medium. Babu et al 15 have reported unsteady MHD viscoelastic fluid with variable concentration and temperature. Another significant factor is the stretching of the porous plate.…”

Section: Introductionmentioning

confidence: 99%

Impact of thermal diffusion and chemical reaction on oscillatory MHD convective flow of a viscoelastic fluid through a porous medium in a slip flow regime

2022

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The purpose of the current investigation is to analyze the influence of thermal diffusion on magnetohydrodynamic viscoelastic fluid flow with concurrent heat and mass transfer near an oscillating porous plate in a slip flow Regime under the influence of a uniform transverse magnetic field. The uniqueness of the present study is to examine the effects of viscoelastic property (Walters B' model) on the flow and heat transfer phenomena when a transverse magnetic field and time‐dependent fluctuating suction at the boundary surface are present in a porous medium with a uniform porous matrix. A regular perturbation technique is used to solve the governing equations for small elastic parameters. Graphical representations are used to show how different parameters affect skin friction, temperature, concentration, and velocity. It is observed that concentration distribution as well as the coefficient of friction is enhanced due to the thermal diffusion effect. It is noticed that the visco‐elastic parameters reduce the velocity of the fluid. In addition, chemical reactions and suction factors cause the flow field's temperature to drop. Furthermore, the fluid concentration drops under the chemical reaction effect.

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“…Recently, Khan (2017) used Laplace transform technique and studied the unsteady free convection flow of a Jeffrey fluid past a vertical plate. Recently, the effect of unsteady MHD free convective flow of a Visco-elastic incompressible electrically conducting fluid past a moving vertical plate through a porous medium with time dependent oscillatory permeability and suction in presence of a uniform transverse magnetic field and heat source and chemical reaction along with heat and mass transfer are reported by Ramesh et al (2017).…”

Section: Introductionmentioning

confidence: 99%

Unsteady MHD Free Convection Jeffery Fluid Flow of Radiating and Reacting Past a Vertical Porous Plate in Slip-Flow Regime With Heat Source

Raju¹,

Parandhama²,

Raju³

et al. 2018

Frontiers in Heat and Mass Transfer

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This manuscript presents an analytical investigation on unsteady MHD free convective viscous incompressible flow of electrically conducting Jeffery fluid with heat source, past an infinite vertical porous flat plate in slip flow regime. A uniform magnetic field perpendicular to the plate is applied. The presence of thermal radiation, heat source, radiation absorption and chemical reaction are included. The effects of flow parameters and thermo physical properties on the velocity temperature and concentration fields across the boundary layer are investigated. The forms of the wall Shear stress, Nusselt number and Sherwood number are derived. The results are shown in figures and tables followed by a quantitative discussion.

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Unsteady MHD Free Convective Flow of a Visco-Elastic Fluid Past an Infinite Vertical Porous Moving Plate with Variable Temperature and Concentration

Cited by 7 publications

References 24 publications

Hydromagnetic free convective flow of Walters’-B fluid over a vertical surface with time varying surface conditions

Hydromagnetic free convective flow of Walters’-B fluid over a vertical surface with time varying surface conditions

Impact of thermal diffusion and chemical reaction on oscillatory MHD convective flow of a viscoelastic fluid through a porous medium in a slip flow regime

Unsteady MHD Free Convection Jeffery Fluid Flow of Radiating and Reacting Past a Vertical Porous Plate in Slip-Flow Regime With Heat Source

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