Magnetoconvection of two-immiscible fluids in vertical enclosure

Malashetty, M. S.; Umavathi, J. C.; Kumar, J. Prathap

doi:10.1007/s00231-005-0062-x

Cited by 57 publications

(37 citation statements)

References 12 publications

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“…The flow and heat transfer in immiscible fluids are of special importance in the petroleum extraction and transport problem. Heat transfer in immiscible flows was discussed by many authors (e.g., Chamkha, 2000;Umavathi et al, 2005;Malashetty et al, 2006;Muthuraj and Srinivas, 2010;Prathap Kumar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis for the MHD Flow of Two Immiscible Micropolar Fluids Between Two Parallel Plates

Jangili¹,

Murthy²

2015

Frontiers in Heat and Mass Transfer

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The paper aims the heat transfer analysis for the flow of two immiscible micropolar fluids inside a horizontal channel, by the first and second laws of thermodynamics under the action of an imposed transverse magnetic field. The plates of the channel are maintained at constant temperatures higher than that of the fluid. The flow region consists of two zones, the flow of the heavier fluid taking place in the lower zone. The condition of hyper-stick is taken on the plates and continuity of velocity, micro-rotation, temperature, heat flux, shear stress and couple stress are imposed at the interface. The velocity, micro-rotation and temperature profiles are derived analytically and these are used to compute the dimensionless expressions for the entropy generation number and Bejan number. The results are presented graphically. It is observed that the imposed magnetic field reduces the entropy production rate near the walls.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis for the MHD Flow of Two Immiscible Micropolar Fluids Between Two Parallel Plates

Jangili¹,

Murthy²

2015

Frontiers in Heat and Mass Transfer

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“…The basic two-fluid model of this situation (in the absence of nonofluids) was outlined in Malashetty and Umavathi [22,23]. In order to account for the nanoparticle concentration, note that the form of the coupled Eqs.…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…Kimura et al [21] examined the effects of the ratio of depths of two-layers on the overall Nusselt number using a spindle oil-ethylene glycol combination and a spindle oil-water combination. Recently Malashetty et al [22,23] studied the free convective flow field and heat transfer of conducting two fluid flows in vertical and inclined channels.…”

Section: Introductionmentioning

confidence: 99%

Convective heat transfer in the vertical channel flow of a clear fluid adjacent to a nanofluid layer: a two-fluid model

2012

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A two-fluid vertical channel flow and convective heat transfer model in which one of the two fluids is a nanofluid demonstrates that the nanofluid can modify the fluid velocity at the interface of the two fluids, and can be used to reduce shear at both the surface of the clear fluid and the interface of the two fluids. Moreover, we find that the addition of a nanofluiod can favorably modify thermal properties of the fluid.

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“…Malashestty and Umavathi [25] examined two-phase MHD flow and heat transfer in the presence of buoyancy effects in an inclined channel for the situation where only one of the phases is electrically conducting. Malashetty et al [26] further investigated the magnetoconvection of two immiscible fluids in a vertical enclosure. Cortell [27] studied the flow and heat transfer of an electrically conducting second grade fluid subject to suction and a transverse magnetic field over a stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer on MHD Viscoelastic Fluid Flow in the Presence of Thermal Diffusion and Chemical Reaction

Popoola¹,

Baoku²,

Olajuwon³

2016

IJHT

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The paper carries out an analysis on the momentum, heat and mass transfer characteristics in an incompressible magnetohydrodynamic non-Newtonian boundary flow of a viscoelastic fluid over a stretching sheet in the presence of thermal diffusion and chemical reaction. The partial differential equations governing the flow as well as heat and mass transfer features are converted into highly non-linear coupled ordinary differential equations by similarity transformations. The resulting differential equations are solved by using a shooting technique with fifth-order Runge-Kutta-Fehlberg integration scheme. The influence of magnetic interaction, variable thermal conductivity, viscoelastic, variable fluid viscosity, heat source/sink rate of chemical reaction, themal radiation and thermal diffusion parameters as well as Prandtl and Schmidt numbers are analyzed for velocity, temperature and concentration profiles. The wall shear stress, wall temperature and concentration gradients are also investigated for the problem. The fluid viscosity varies as an inverse function of velocity while the thermal conductivity assumes a linear and an inverse function of temperature and concentration respectively. The study shows that the thermal diffusion and thermal radiation parameters have opposite effects on the skin friction coefficient and wall concentration gradient. However, the rate of chemical reaction has similar influence on the skin friction coefficient and wall temperature gradient.

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Magnetoconvection of two-immiscible fluids in vertical enclosure

Cited by 57 publications

References 12 publications

Thermodynamic Analysis for the MHD Flow of Two Immiscible Micropolar Fluids Between Two Parallel Plates

Thermodynamic Analysis for the MHD Flow of Two Immiscible Micropolar Fluids Between Two Parallel Plates

Convective heat transfer in the vertical channel flow of a clear fluid adjacent to a nanofluid layer: a two-fluid model

Heat and Mass Transfer on MHD Viscoelastic Fluid Flow in the Presence of Thermal Diffusion and Chemical Reaction

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