Effects of Hall current and rotation

Raptis, A.; Ram, P. C.

doi:10.1007/bf00650353

Cited by 24 publications

(16 citation statements)

References 3 publications

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“…In recent years, the effects of Hall currents on a magnetohydrodynamic free convective flow along a vertical surface and in the presence of a transverse magnetic field with or without mass transfer have been studied by a number of authors: Hossain [5], Hossain and Mohammad [6], Hossain and Rashid [7], Pop [8], Raptis and Ram [9], and Ram [10]. Heat and mass transfer by natural convection in a non-Darcy porous medium has been studied by Murthy and Singh [11].…”

Section: Introductionmentioning

confidence: 99%

Similarity analysis in magnetohydrodynamics: effects of hall and ion-slip currents on free convection flow and mass transfer of a gas past a semi-infinite vertical plate

2001

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Summary. The effects of Hall and ion-slip currents on a steady free convection flow and mass transfer past a semi-infinite vertical plate in a viscous incompressible electrically conducting fluid are investigated when the fluid is subjected to a strong non-uniform magnetic field. The similarity solutions are obtained using a scaling group of transformations. These are the only symmetry transformations admitted by the field equations. The derived fundamental equations under the assumption of a small magnetic Reynolds number are solved numerically by employing the shooting method. The axial and transverse components of the velocity function profiles are computed for various values of magnetic parameters, Hall and ionslip current parameters.

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Section: Introductionmentioning

confidence: 99%

Similarity analysis in magnetohydrodynamics: effects of hall and ion-slip currents on free convection flow and mass transfer of a gas past a semi-infinite vertical plate

2001

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“…This is referred to as Hall Effect; the induced current is called Hall current. Several research work on this subject under various flow configurations are found in literature: Raptis and Ram (1984) studied the effects of hall current and rotation on the flow of electrically conducting rarefied gas, the work shows that as Hall parameter increases, the primary velocity increases near the plate and decreases away from the plate while the secondary velocity decreases. Abd El-Aziz and Nabil (2012) applied homotopy analysis method in the study of hydromagnetic mixed convection flow past an exponentially stretching sheet with Hall current.…”

Section: Introductionmentioning

confidence: 99%

Hall current and suction/injection effects on the entropy generation of third grade fluid

Opanuga¹,

Gbadeyan²,

Okagbue³

et al. 2018

Int. j. adv. appl. sci.

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In this work, effects of Hall current and suction/injection on a steady, viscous, incompressible and electrically conducting third grade fluid past a semi-infinite plate with entropy generation is investigated. It is assumed that the fluid motion is induced by applied pressure gradient. Hot fluid is injected with a constant velocity at the injection wall while it is sucked off at the upper wall with the same velocity. The governing equations of Navier-Stoke, energy and entropy generation obtained are non-dimensionalised, the resulting dimensionless velocity and temperature profiles are solved by Adomian decomposition technique due to the nonlinearity of the coupled system of equations. The obtained solution for the velocity profile is validated by the exact solution and the existing one in literature at M = 0 and the analytical expressions for fluid velocity and temperature are utilized to calculate the entropy generation and irreversibility ratio. Various plots are presented and discussed. It is found that increasing Hall current parameter increases primary velocity, temperature, entropy generation and Bejan number while the reverse trend is observed when both suction/injection and magnetic field parameters are increased. It is also noticed that entropy production at the upper wall is due to heat transfer.

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“…When the strength of the magnetic field is very strong, there appears the well known phenomenon of the Hall effect, which has important engineering applications to flows in channels and ducts and to problems of MHD generators and Hall accelerators. The above type of flow through a porous medium has, however, been studied by, among others, Raptis & Kafousias (1982). The above type of flow through a porous medium has, however, been studied by, among others, Raptis & Kafousias (1982).…”

Section: Introductionmentioning

confidence: 99%

Unsteady hydromagnetic free convection flow with hall current mass transfer and variable suction through a porous medium near an infinite vertical porous plate with constant heat flux

Sattar¹

1994

Int. J. Energy Res.

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The effects of Hall current on unsteady free convection flow of an MHD viscous incompressible fluid along an infinite vertical porous plate are investigated in the presence of a uniformly applied magnetic field acting in a plane which makes an angle α with the plane transverse to the plate. A similarity parameter, taken to be a function of time, is introduced, and the suction velocity is considered to be inversely proportional to this parameter. Similarity equations are then derived and solved numerically. The effects of the Hall parameter, the magnetic parameter and the permeability are discussed and shown graphically.

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Effects of Hall current and rotation

Cited by 24 publications

References 3 publications

Similarity analysis in magnetohydrodynamics: effects of hall and ion-slip currents on free convection flow and mass transfer of a gas past a semi-infinite vertical plate

Similarity analysis in magnetohydrodynamics: effects of hall and ion-slip currents on free convection flow and mass transfer of a gas past a semi-infinite vertical plate

Hall current and suction/injection effects on the entropy generation of third grade fluid

Unsteady hydromagnetic free convection flow with hall current mass transfer and variable suction through a porous medium near an infinite vertical porous plate with constant heat flux

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