On Reducing Aerodynamic Heat-Transfer Rates by Magnetohydrodynamic Techniques

Meyer, Rudolf X.

doi:10.2514/8.7781

Cited by 162 publications

(29 citation statements)

References 3 publications

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“…The fluid is a metallic liquid whose magnetic Reynolds number is very small and hence the induced magnetic field produced by the fluid motion is negligible in comparison to the applied one (Cramer and Pai 1973) so that the magnetic field . Also, no external electric field is applied, so the effect of polarization of magnetic field is negligible (Meyer (1958), i.e. .…”

Section: Mathematical Formula-tionmentioning

confidence: 99%

Unsteady Hydromagnetic Flow of a Heat Absorbing Dusty Fluid Past a Permeable Vertical Plate with Ramped Temperature

2014

JAFM

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The unsteady flow and heat transfer of a viscous incompressible, electrically conducting dusty fluid past vertical plate under the influence of a transverse magnetic field is studied with a view to examine the combined effects of suction, heat absorption and ramped wall temperature. The temperature of the wall is assumed to have a temporarily ramped profile which goes on increasing up to a certain time limit and then becomes constant. To investigate the effect of rampedness in wall temperature, the solution for the flow past an isothermal wall is also obtained. The governing partial differential equations are solved using Laplace transformation technique in which the inversion is obtained numerically using Matlab. To validate the results of numerical inversion a comparison between the numerical and analytical values of fluid and particle temperatures and Nusselt number is also presented. The effects of pertinent flow parameters affecting the flow and heat transfer are investigated with the help of graphs and tables. It is found that the increase in suction, heat absorption and particle concentration contribute in thinning the thermal and momentum boundary layers and the velocity and temperature for both the fluid and particle phases are higher in the case of a flow past an isothermal plate than that of a flow past a plate with ramped temperature.

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Section: Mathematical Formula-tionmentioning

confidence: 99%

Unsteady Hydromagnetic Flow of a Heat Absorbing Dusty Fluid Past a Permeable Vertical Plate with Ramped Temperature

2014

JAFM

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“…The generalized Ohm's law including Hall current is given in the form given by Marg (1964). In the absence of an externally applied electric field and with negligible effects of polarization of the ionized gas, we also assume that E = 0 (Meyer, 1958). The effect of Hall currents gives rise to a force in the z-direction, which includes a cross flow in that direction, and hence the flow becomes three dimensional.…”

Section: Formulation and Solution Of The Problemmentioning

confidence: 99%

Hall Current Effects on Free-Convection MHD Flow Past A Porous Plate

Narayana¹,

Ramireddy²,

Venkataramana³

2011

Int J Automot Mech Eng

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Heat and mass transfer along a vertical porous plate under the combined buoyancy force effects of thermal and species diffusion is investigated in the presence of a transversely applied uniform magnetic field and the Hall currents are taken into account. The governing fundamental equations on the assumption of a small magnetic Reynolds number are approximated by a system of non-linear ordinary differential equations, which are integrated by fourth-order Runge-Kutta method. Velocity, temperature and concentration are shown on graphs. The numerical values of the local shear stress, the local Nusselt number Nu and the local Sherwood number Sh are entered in tables. The effects of the magnetic parameter, Hall parameter and the relative buoyancy force effect between species and thermal diffusion on the velocity, temperature and concentration are discussed. The results are compared with those known from the literature.

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“…where wo is the constant suction velocity at the plate, and the negative sign indicates that the suction velocity is directed towards the plate. ,./Bowo, E , = Eyz/Bowo, j , = j,,/ We now consider further the case of a short circuit problem in which the applied electric field k = 0 (Meyer, 1958). With this assumption, equation ( where M I = (2Eri + H g ) .…”

Section: P C Rammentioning

confidence: 99%

Effects of hall and ion-slip currents on free convective heat generating flow in a rotating fluid

Ram

1995

Int. J. Energy Res.

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In this work, the effects of Hall and ion‐slip currents on free convective heat generating rarefied gas in a rotating frame of reference are studied for the case of a strong magnetic field imposed perpendicularly to the plate. Expressions for the velocity and temperature fields are obtained, and the effects of the various parameters of the problem, e.g. the Hall parameter, the ion‐slip parameter and rarefaction, are discussed through graphs.

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On Reducing Aerodynamic Heat-Transfer Rates by Magnetohydrodynamic Techniques

Cited by 162 publications

References 3 publications

Unsteady Hydromagnetic Flow of a Heat Absorbing Dusty Fluid Past a Permeable Vertical Plate with Ramped Temperature

Unsteady Hydromagnetic Flow of a Heat Absorbing Dusty Fluid Past a Permeable Vertical Plate with Ramped Temperature

Hall Current Effects on Free-Convection MHD Flow Past A Porous Plate

Effects of hall and ion-slip currents on free convective heat generating flow in a rotating fluid

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