ibrabbas7

Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

268

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Publications Which contain the keyword: Porous medium


2020-02-25 11:54:38 Keywords Porous medium,
Generalized thermoelastic interaction in a two-dimensional porous medium under dual phase lag model
The purpose of this study is to use the generalized model for thermoelastic wave under the dual phase lag (DPL) model to compute the increment of temperature, the components of displacement, the changes in volume fraction field and the stress components in a two-dimensional (2D) porous medium. Read more

2018-10-01 18:21:43 Keywords Porous medium, thermal radiation, finite element method,
Effects of thermal radiation on natural convection in a porous medium
An analysis is presented for the thermal radiation effect on the non-Darcy natural convection over a vertical flat plate in a fluid saturated porous medium. Forchheimer extension is considered in the flow equations. Rosseland approximation is used to describe the radiative heat flux in the energy equation. The nondimensional governing partial equations are solved by the finite element method. The ... Read more

Combined effect of thermal dispersion and radiation on free convection in a fluid saturated, optically thick porous medium
The present article considers a numerical study on the combined effect of thermal dispersion and thermal radiation on the non-Darcy natural convection flow over a vertical flat plate kept at higher and constant temperature in a fluid saturated porous medium. Forchheimer extension is used in the flow equations. The coefficient of thermal diffusivity has been assumed to be the sum ... Read more

2018-10-02 08:07:29 Keywords fluid, Viscous dissipation, Porous medium, natural convection,
Viscous dissipation effect on natural convection in a fluid saturated porous medium
This paper considers the problem of viscous dissipation effects on non-Darcy natural convection over a vertical flat plate embedded in a fluid-saturated porous medium. Forchheimer extension is considered in the flow equations and its contribution to viscous dissipation is considered in the energy equation. The nondimensional governing equations are solved, numerically, by the finite-element method (FEM). The resulting nonlinear integral ... Read more

2018-10-02 11:23:25 Keywords thermal fluid flow, Porous medium, Viscous dissipation,
On the viscous dissipation modeling of thermal fluid flow in a porous medium
The problem of viscous dissipation and thermal dispersion in saturated porous medium is numerically investigated for the case of non-Darcy flow regime. The fluid is induced to flow upward by natural convection as a result of a semi-infinite vertical wall that is immersed in the porous medium and is kept at constant higher temperature. The boundary layer approximations were used ... Read more

2018-10-02 12:35:36 Keywords finite element method, Porous medium,
Comparison study between the effects of different terms contributing to viscous dissipation in saturated porous media
Some sort of controversy is associated with the problem of viscous dissipation in saturated porous media for which we try to present a comparison study between the influences of the different terms contributing to this phenomenon. We consider viscous dissipation by studying the case of semi-infinite flat plate embedded in saturated porous medium and is kept at constant, higher temperature ... Read more

Finite element analysis of hydromagnetic flow and heat transfer of a heat generation fluid over a surface embedded in a non-Darcian porous medium in the presence of chemical reaction
An analysis is carried out to study the flow, chemical reaction and mass transfer of a steady laminar boundary layer of an electrically conducting and heat generating fluid driven by a continuously moving porous surface embedded in a non-Darcian porous medium in the presence of a transfer magnetic field. The governing partial differential equations are converted into ordinary differential equations ... Read more

2018-09-25 11:18:12 Keywords Porous medium, humid air,
STUDY OF THE EFFECT OF POROUS MEDIUM (SAND) THICKNESS ON DOUBLE SLOPE SOLAR STILL PRODUCTIVITY WITH CONSIDERING HUMID AIR REGION
This current work studies the effects of initially saturated porous medium and humid air region on the water vapor condensation. The experiments of the present study were conducted on a double slope solar still (DSSS). The DSSS liner dimension is 1.9 m by 0.86 m by (0.02 m, 0.03 m and 0.04 m). The effect of porous medium thickness on ... Read more

Boundary layer natural convection in a fluid saturated porous medium using finite element method
The present paper considers a numerical study of the non-Darcy natural convection over a vertical flat plate in a fluid-saturated porous medium. Forchheimer extension is considered in the flow equations. The nondimensional governing equations are solved by the finite element method. The resulting nonlinear integral equations are linearized and solved using the Newton− Raphson iteration. The finite element implementations are ... Read more