Homogeneous-heterogeneous reactions and heat source/sink effects in MHD peristaltic flow of micropolar fluid with Newtonian heating in a curved channel

Hayat, Tasawar; Farooq, Shahid; Ahmad, Bashir; Alsaedi, Ahmed

doi:10.1016/j.molliq.2016.08.067

Cited by 86 publications

(18 citation statements)

References 50 publications

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“…Hayat et al (2016) investigated magnetohydrodynamic peristaltic flow of micropolar fluid in curved channel, further Hayat et al (2017) analyzed the magnetohydrodynamic flow of micropolar fluid over curved stretching surface. Recently, Bakr and Chamkha, (2016) employed small perturbation technique to investigate effects of variable heat flux and thermal radiation in rotating micropolar fluid.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Shamshuddin¹,

Chamkha²,

Thumma³

et al. 2018

Frontiers in Heat and Mass Transfer

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In the current paper, a finite element computational solution is conducted for MHD double diffusive flow characterizing dissipative micropolar mixed convective heat and mass transfer adjacent to a vertical porous plate embedded in a saturated porous medium. The micropolar fluid is also chemically reacting, both Soret and Dufour effects and also heat absorption included. The governing partial differential equations for momentum, heat, angular momentum and species conservation are transformed into dimensionless form under the assumption of low Reynolds number with appropriate dimensionless quantities. The emerging boundary value problem is then solved numerically with an efficient computational finite element method employing the weighted residual approach. The influence of various emerging physical parameters like thermal Grashof number, solutal Grashof number, Magnetic body force parameter, permeability parameter, radiation parameter, heat absorption parameter, Eckert number, Schmidt number, Soret and Dufour effects and first order chemical reaction parameter are examined, we observed that the microrotation velocity profiles do not show uniform variations with Eringen vortex viscosity parameter and graphical results visualize the velocity of a Newtonian fluid is lower as compared with a micropolar fluid one. Furthermore, finite element code is benchmarked with the results reported in the literature to check the validity and accuracy under some limiting cases and excellent agreement is seen with published solutions. Finally, results of skin friction coefficient, couple stress coefficient, Nusselt number and Sherwood number for invoked parameter are tabulated which shows that Sherwood number is enhances with increasing Soret number and homogeneous chemical reaction. Nusselt number is increased with an increase of Eckert number and Dufour number.

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Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Shamshuddin¹,

Chamkha²,

Thumma³

et al. 2018

Frontiers in Heat and Mass Transfer

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“…Relevant works include Mekheimer [31] who studied the influence of radial magnetic field thermal diffusion in peristaltic pumping of a Newtonian viscous liquid in a vertical annular regime. Further studies have been presented for magnetohydrodynamic peristalsis for a variety of working fluids including Johnson-Segalman viscoelastic fluids [32], nanofluids [33,34], variable viscosity liquids [35], hyperbolic tangent nanofluids [36], magnetic viscous fluids [37], reactive micropolar fluids [38] and viscoelastic two-phase (dusty) magnetic fluids [39].…”

Section: Introductionmentioning

confidence: 99%

Electro-magneto-hydrodynamic peristaltic pumping of couple stress biofluids through a complex wavy micro-channel

Tripathi

Jhorar

Bég

et al. 2017

Journal of Molecular Liquids

108

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Biomimetic propulsion mechanisms are increasingly being explored in engineering sciences. Peristalsis is one of the most efficient of these mechanisms and offers considerable promise in microscale fluidics. Electrokinetic peristalsis has recently also stimulated significant attention. Electrical and magnetic fields also offer an excellent mode for regulating flows. Motivated by novel applications in electro-conductive microchannel transport systems, the current article investigates analytically the electromagnetic pumping of non-Newtonian aqueous electrolytes via peristaltic waves in a two-dimensional microchannel with different peristaltic waves propagating at the upper and lower channel wall (complex wavy scenario). The Stokes couple stress model is deployed to capture micro-structural characteristics of real working fluids. The unsteady two-dimensional conservation equations for mass and momentum conservation, electro-kinetic and magnetic body forces, are formulated in two dimensional Cartesian co-ordinates. The transport equations are transformed from the wave frame to the laboratory frame and the electrical field terms rendered into electrical potential terms via the Poisson-Boltzmann equation, Debye length approximation and ionic Nernst Planck equation. The dimensionless emerging linearized electro-magnetic boundary value problem is solved using integral methods. The influence of Helmholtz-Smoluchowski velocity (characteristic electro-osmotic velocity), couple stress length parameter (measure of the polarity of the fluid), Hartmann magnetic number, and electro-osmotic parameter on axial velocity, volumetric flow rate, time-averaged flow rate and streamline distribution are visualized and interpreted at length.

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“…The volumetric heat source/sink has immense applications in science and engineering including in electronic chips, fire and safety engineering, nuclear reactors, chemical engineering, semiconductor wafers, and geophysical sciences. Some of the interesting studies on heat sources/sinks are described by Hayat and colleagues, Ravindran and colleagues, Mohamed and Abo‐Dahab, Singh and colleagues, and Hayat and colleagues …”

Section: Introductionmentioning

confidence: 99%

Influence of chemically reactive species and a volumetric heat source or sink on mixed convection over an exponentially decreasing mainstream

Patil

Kumbarwadi

Momoniat

2017

Heat Trans. Asian Res.

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Homogeneous-heterogeneous reactions and heat source/sink effects in MHD peristaltic flow of micropolar fluid with Newtonian heating in a curved channel

Cited by 86 publications

References 50 publications

Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Electro-magneto-hydrodynamic peristaltic pumping of couple stress biofluids through a complex wavy micro-channel

Influence of chemically reactive species and a volumetric heat source or sink on mixed convection over an exponentially decreasing mainstream

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