الفهرس 
General IntroductionOnly 14 pages are availabe for public view
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Abstract
The thesis study of the numerical solutions of partial differential equations which related to laminar flow of an incompressible, viscous and electrically conducting fluid over a porous rotating disc under the effects of different physical parameters and from these solutions we discuss the behavior of the flow due to the motion of the rotating disc and the effects of the physical parameters, through four problems as follow:
The first problem: In this problem we found the numerical solution of the system of non linear differential equations governing fluid flow due to a porous heated rotating disc under the effects of a uniform magnetic field which is normal to the disc surface and free convection, where the temperature of the rotating disc is variable with the distance from the center of the disc.
The second problem: Also in this problem we discussed the numerical solutions of the system of non linear differential equations governing fluid flow due to a porous heated rotating disc under the effects of variable magnetic field which will give rise to an induced magnetic field.
The third problem: In this problem we studied the numerical solutions of the system of non linear partial differential equations which discuss a steady symmetric of fluid flow due to a porous heated disc under the effects of chemical reaction, viscous dissipation and heat generation absorption through non-Darcian porous medium.
The fourth problem: Also, this problem is study of the numerical solutions of the system of nonlinear partial differential equations governing laminar flow of an incompressible, viscous and electrically conducting fluid over a porous rotating disc under the effects of variable viscosity and thermal conductivity with temperature, Hall current and heat radiation from the disc surface