Magnetic field effect on heat and fluid flow over a wavy surface with a variable heat flux

Tashtoush, Bourhan; Al-Odat, M. Q.

doi:10.1016/s0304-8853(03)00547-x

Cited by 37 publications

(12 citation statements)

References 13 publications

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“…Bujurke and Kudenatti investigated the magnetohydrodynamic (MHD) squeeze film behavior between rough rectangular plates. The MHD flow over a wavy surface was studied by Tashtoush and Al‐Odat . Yoon et al considered magnetohydrodynamics boundary layer flow over a rapidly rotating axisymmetric wavy disk.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetohydrodynamic (EMHD) flow between two transversely wavy microparallel plates

Buren

Jian

2015

Electrophoresis

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In this paper, 2D electromagnetohydrodynamic (EMHD) flow in a microparallel channel with slightly transverse corrugated walls is investigated using perturbation method. The corrugations of the two walls are presented by periodic sinusoidal waves with small amplitudes. The perturbation solutions of the stream function and a relation between flow rate and roughness are obtained. It is shown that the flow rate always decreases due to the wall corrugations irrespective of the phase difference. For prescribed Hartmann number and wave number of the wavy walls, the flow resistance increases as the phase difference between the wall corrugations increases. The effect of corrugation on the flow rate decreases with Hartmann number. With the increase of wave number, the effects of corrugations on the flow rate increase. The phase difference of wall corrugations becomes unimportant when the wave number is greater than 4. The obtained results for the flow rates as a function of the applied current are in qualitative agreement with the existing experimental results.

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Section: Introductionmentioning

confidence: 99%

Electromagnetohydrodynamic (EMHD) flow between two transversely wavy microparallel plates

Buren

Jian

2015

Electrophoresis

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“…Molla et al [9] have studied natural convection flow along a vertical wavy surface with uniform surface temperature in presence of heat generation/absorption. Tashtoush and Al-Odat [10] investigated magnetic field effect on heat and fluid flow over a wavy surface with a variable heat flux. Yao [11] studied natural convection along a vertical complex wavy surface.…”

Section: Introductionmentioning

confidence: 99%

Heat Generation Effects on MHD Natural Convection Flow along a Vertical Wavy Surface with Variable Thermal Conductivity

Alim¹,

Karim²,

Akand³

2012

AJCM

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The heat generation effects on magnetohydrodynamic(MHD) natural convection flow along a vertical wavy surface with variable thermal conductivity have been investigated. The governing boundary layer equations are first transformed into a non-dimensional form using suitable set of dimensionless variables. The resulting nonlinear system of partial differential equations are mapped into the domain of a vertical flat plate and then solved numerically employing the implicit finite difference method, known as Keller-box scheme. The numerical results of the surface shear stress in terms of skin friction coefficient and the rate of heat transfer in terms of local Nusselt number, the stream lines as well as the isotherms are shown graphically for a selection of parameters set consisting of thermal conductivity variation parameter, heat generation parameter Q, magnetic parameter M and Prandtl number Pr. Comparison of numerical results of present work with other published data has been shown in table.

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“…In this study, separation points were calculated by considering amplitude of a wavy surface as 0.2 and obtained solutions against x when exponent of variable heat flux is greater than -0.5. This work was extended by Tashtoush and Odat [15] by introducing magnetic field to the flow and found that the heat transfer rate is directly proportional to the increasing magnetic field strength. Rees and Pop [16] studied free convection flow through a vertical wavy sheet in porous medium by considering uniform heat flux.…”

Section: Introductionmentioning

confidence: 91%

Heat transfer in natural convection flow of nanofluid along a vertical wavy plate with variable heat flux

Mustafa

Javed

2019

THERM SCI

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The present analysis is concerned to examine the enhancement of heat transfer in natural convection flow of nanofluid through a vertical wavy plate assumed at variable heat flux. The rate of heat transfer in nanofluid flow as compared to pure water can be increased due to increase the density of nanofluid which depends on the density and concentration of nanoparticles. For this analysis, Tiwari and Das model is used by considering two nanoparticles i. e. Al 2 O 3 and Cu are suspended in a base fluid (water). A very efficient implicit finite difference technique converges quadratically is applied on the concerning PDE for numerical solution. The effects of pertinent parameters namely, volume fraction parameter of nanoparticle, wavy surface amplitude, Prandtl number and exponent of variable heat flux on streamlines, isothermal lines, local skin friction coefficient and local Nusselt number are shown through graphs. In this analysis, a maximum heat transfer rate is noted in Cu-water nanofluid through a vertical wavy surface as compared to Al 2 O 3 -water and pure water.

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Magnetic field effect on heat and fluid flow over a wavy surface with a variable heat flux

Cited by 37 publications

References 13 publications

Electromagnetohydrodynamic (EMHD) flow between two transversely wavy microparallel plates

Electromagnetohydrodynamic (EMHD) flow between two transversely wavy microparallel plates

Heat Generation Effects on MHD Natural Convection Flow along a Vertical Wavy Surface with Variable Thermal Conductivity

Heat transfer in natural convection flow of nanofluid along a vertical wavy plate with variable heat flux

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