Browsing by Author "Basant Kumar Jha"

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Effect of magnetic field on the free-convection and mass transfer flow through a porous medium
(Kluwer Academic Publishers, 1989) Basant Kumar Jha; Ravindra Prasad
An analytical study is performed to examine the effects of magnetic field on the free-convection and mass transfer flow through porous medium. The effects of various parameters on the velocity field are discussed by tables. © 1989 Kluwer Academic Publishers.
Effects of applied magnetic field on transient free-convective flow in a vertical channel
(1998) Basant Kumar Jha
The effects of uniform transverse magnetic field on the transient free convective flow of an electrically conducting fluid in a vertical channel is discussed. Expression for velocity field and skin-friction are obtained by the Laplace transform technique. The influence of the various parameter, entering into the problem, on the velocity field and skin-friction is extensively discussed.
Effects of hall current and wall temperature oscillation on free convective and mass transfer flow in a rotating porous medium with constant heat source
(1991) Basant Kumar Jha
The combined effects of Hall current and a constant heat source on the hydromagnetic free convective and mass transfer flow past an infinite vertical porous plate in a rotating porous medium are considered, when the temperature of the plate varies with time about a nonzero constant mean and the temperature of the free stream is constant. The problem is solved analytically and the velocity profiles are shown on graphs. Effects of m (Hall parameter) and α (heat source parameter) on velocity are discussed extensively. Copyright © 1991 John Wiley & Sons, Ltd.
Effects of mass transfer on free-convection oscillatory flow past a vertical porous plate with thermal radiation through porous medium
(AMSE Press, 1995) Basant Kumar Jha
In this work an analysis of the two dimensional unsteady free-convection and mass transfer oscillatory flow through porous medium in presence of thermal radiation is given, for an incompressible viscous fluid past an infinite vertical porous plate. The Rosseland approximation is used to describe the radiative heat flux in the energy equation. The effects of Sc (Schmidt number) and F (permeability of the porous medium) on the mean velocity field and mean skin-friction are discussed for both the cases of heating and cooling of the porous plate by free convection current.
Free convection and mass transfer flow of non-newtonian fluid in the stokes problem for a vertical plate with thermal diffusion effect
(1992) Basant Kumar Jha
An exact analysis of the unsteady free convection and mass transfer flow of non-Newtonian fluid past an impulsively started infinite vertical plate has been presented in presence of thermal diffusion effect. The expression for the velocity field has been obtained by the Laplace transform technique. The influence of Soret number (thermal diffusion parameter) on velocity field is extensively discussed. © 1992, Taylor & Francis Group, LLC. All rights reserved.
Free convection and mass transfer flow of non‐newtonian fluid with thermal diffusion effect
(1992) Basant Kumar Jha
An analytical study is performed to examine the thermal diffusion characteristics of free convection and mass transfer flow in a non‐Newtonian fluid (Walters, 1962: liquid B') past a uniformly accelerated infinite vertical plate in the presence of thermal diffusion. The expression for the velocity field is obtained by the Laplace transform technique. The influence of the Soret number (a thermal diffusion parameter) on the velocity field is extensively discussed with the help of graphs. Copyright © 1992 John Wiley & Sons, Ltd.
Free-convection and mass transfer effects on the flow past an accelerated vertical plate with heat sources
(1990) Basant Kumar Jha; Ravindra Prasad
[No abstract available]
Free-convection effects on hydromagnetic flow past an impulsively started vertical porous plate through porous medium
(1990) Basant Kumar Jha
[No abstract available]
Free-convection flow in the stokes problem for a vertical plate with variable surface temperature
(Kluwer Academic Publishers, 1991) Basant Kumar Jha; Ravindra Prasad; Surendra Rai
The free-convection flow of an incompressible viscous fluid past an infinite, vertical plate for impulsive as well as uniformly accelerated motion of the plate is discussed when the plate temperatuve varies as the square root of time. The Laplace transform technique is used to obtain the expressions for velocity and skin-friction. The influence of the various parameters, entering into problem, on the velocity field and skin-friction is extensively discussed. © 1991 Kluwer Academic Publishers.
Free-convection flow through an annular porous medium
(2005) Basant Kumar Jha
This study addresses the Brinkman-extended Darcy model (Brinkman flow) of a laminar free-convective flow in an annular porous region. Closed form expressions for Velocity field, Temperature field, Skin-friction and Mass flow rate are given, under a thermal boundary condition of mixed kind at the outer surface of the inner cylinder while the inner surface of the outer cylinder is isothermal. The governing independent parameters are identified to be Darcy number (Da) and ratio of outer to inner radii (R). It is hoped that the study of such flows gives limiting conditions for developing flows and provides an analytical check on numerical solutions for more complex problems dealing with non-Darcian free-convection flow in an annular region. © Springer-Verlag 2005.
Free-convective flow of non-Newtonian fluid with heat sources
(Kluwer Academic Publishers, 1991) Basant Kumar Jha
An analytical study is performed to examine the effects of temperature-dependent heat source on free-convective flow of non-Newtonian fluid (Walters's liquid B′). The expression for the velocity field has been obtained by the Laplace transform technique. The influence of the various parameter entering into the problem is extensively discussed. © 1991 Kluwer Academic Publishers.
Mass transfer effects on natural convection flow of visco-elastic liquid past an accelerated vertical plate
(1990) Basant Kumar Jha; Anil Kumar
An analytical study is performed to examine the mass transfer characteristics on natural convection flow of a visco-elastic liquid (Walter-B′ Type) due to uniformly accelerated motion of an infinite vertical plate. The expressions for the velocity field and the skin-friction have been obtained by Laplace transform technique. The influence of the various parameters entering into the problem is extensively discussed.
Mass transfer effects on the flow past an exponentially accelerated vertical plate with constant heat flux
(Kluwer Academic Publishers, 1991) Basant Kumar Jha; Ravindra Prasad; Surendra Rai
An analytical study is performed to examine the mass-transfer characteristics on the free-convection flow of an incompressible viscous fluid past an exponentially accelerated infinite vertical plate under the action of constant heat flux. The effects of various parameters occurring into the problem, is extensively discussed. © 1991 Kluwer Academic Publishers.
Mhd flow through porous medium in presence of heat and mass transfer with heat source
(1994) Basant Kumar Jha
Unsteady free convection and mass transfer flow past an accelerated infinite nonconducting vertical plate through a porous medium have been analyzed in the presence of a uniform magnetic field and constant heat source. Expressions for the velocity field for two different cases are obtained by the Laplace-transform technique. The influence of the various parameters entering into the problem on the velocity field is extensively discussed. © 1994, Taylor & Francis Group, LLC. All rights reserved.
MHD free and forced convection flow past an infinite vertical plate with heat source
(Kluwer Academic Publishers, 1991) Basant Kumar Jha
An analytical study is performed to examine the effects of magnetic field and temperature-dependent heat source on the free and forced convection flow past an infinite vertical plate. The expressions for the velocity field, penetration distance and skin-friction have been obtained by Laplace transform technique. The influence of the various parameters entering into the problem is extensively discussed. © 1991 Kluwer Academic Publishers.
MHD free-convection and mass transfer flow of an elasto-viscous fluid
(Kluwer Academic Publishers, 1991) Basant Kumar Jha
The effects of magnetic field and mass transfer on the flow of an elasto-viscous fluid past an infinite vertical plate, when the plate is moving with uniform velocity U, are discussed. The magnetic lines of force are assumed to be fixed relative to the plate. The Laplace transform method is used to obtain the expression for velocity. The effect of various parameters, occurring into the problem, is discussed with the help of tables. © 1991 Kluwer Academic Publishers.
MHD free-convection and mass transfer flow through a porous medium with heat source
(Kluwer Academic Publishers, 1991) Basant Kumar Jha; Ravindra Prasad
An analytical study is performed to examine the heat source characteristics on the free-convection and mass transfer flow past an impulsively started infinite non-conducting vertical plate of a viscous, incompressible electrically-conducting fluid under the action of a uniform magnetic field through porous medium. The effects of various parameters on the velocity field are extensively discussed. © 1991 Kluwer Academic Publishers.
MHD free-convection and mass-transform flow through a porous medium
(Kluwer Academic Publishers, 1991) Basant Kumar Jha
The effect of a uniform transverse magnetic field on the free-convection and mass-transform flow of an electrically-conducting fluid past an infinite vertical plate for uniformly accelerated motion of the plate through a porous medium is discussed. The magnetic lines of force are assumed to be fixed relative to the plate. Expression for the velocity field and skin-friction are obtained by the Laplace transform technique. The influence of the various parameters, entering into the problem, on the velocity field and skin-friction is extensively discussed. © 1991 Kluwer Academic Publishers.
MHD free-convection flow past an exponentially accelerated vertical plate
(1991) Basant Kumar Jha; Ravindra Prasad
[No abstract available]
Role of magnetic field on transient forced and free-convection flow past an infinite vertical porous plate through porous medium with heat source
(Kluwer Academic Publishers, 1991) Basant Kumar Jha
Effects of magnetic field and permeability of the porous medium on unsteady forced and free-convection flow past an infinite vertical porous plate in presence of temperature-dependent heat source have been analysed. The Laplace transform method is used to obtain the expression for velocity field, skin friction, and leading edge effects. During the course of discussion, the effects of M (magnetic parameter), S (heat source parameter), λ (suction parameter), and K (permeability of porous medium) on velocity field, skin friction, and leading edge effect have been extensively discussed. © 1991 Kluwer Academic Publishers.