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1
Content available remote Flow of a magneto-micropolar fluid with temperature dependent viscosity and thermal conductivity past a continuously moving plate
Modather M., Abdou M.
International Journal of Applied Mechanics and Engineering
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2009
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Vol. 14, no 2
461-471
EN
A boundary layer analysis has been presented to study heat transfer with the effects of temperature dependent viscosity and thermal conductivity in the laminar, viscous, incompressible, electrically conducting, micropolar fluid past a continuously moving plate in the presence of a transverse magnetic field. The governing equations are transformed to dimensionless similarity boundary layer equations. Numerical solutions are given for the governing momentum, angular momentum and energy equations using the shooting method. The effects of the magnetic field parameter, the viscosity variation parameter, thermal conductivity variation parameter and micropolar parameter on the skin friction, wall couple stress and rate of heat transfer are discussed.
2
Content available remote MHD natural convection heat and mass transfer in a micropolar fluid from radiate vertical porous surfaces with chemical reaction
Modather M., Abdou M., El-Kabeir S. M.
International Journal of Applied Mechanics and Engineering
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2007
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Vol. 12, no 3
745-765
EN
The effect of a chemical reaction on the free convection flow of a viscous incompressible conductive micropolar fluid from a radiative vertical porous plate with a uniform surface temperature, uniform rate of suction or injection and uniform magnetic field is investigated. The Rosseland diffusion approximation is used to describe the radiative heat flux in the energy equation. As the micropolar parameter increases the temperature, concentration and microrotation increase while the velocity decreases for the suction and injection case and increasing the chemie al reaction parameter decreases the velocity, concentration and microrotation for the suction and injection case while the temperature increases with the increasing of the chemical reaction parameter.
3
Content available remote The effect of variable viscosity on MHD natural convection in micropolar fluids
El-Hakiem M. A., Modather M., Abdou M.
International Journal of Applied Mechanics and Engineering
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2006
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Vol. 11, no 2
301-320
EN
The influence of variable viscosity and a transverse magnetic field on natural convection in micropolar fluids is examined. The fluid viscosity is assumed to vary as an inverse linear function of temperature. Four different vertical flows have been analyzed, those adjacent to an isothermal surface and uniform heat flux surface, a plane plume and flow generated from a horizontal line energy source on a vertical adiabatic surface, or wall plume. By means of similarity solutions and deviation of the velocity, temperature and micro-rotation fields as well as the skin friction, heat transfer and wall couple stress results from their constant values are determined.
4
Content available remote Effect of heat and mass transfer on free convection flow over a cone with uniform suction or injection in micropolar fluids
El-Kabeir S. M., Modather M., Mansour M. A.
International Journal of Applied Mechanics and Engineering
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2006
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Vol. 11, no 1
15-35
EN
A regular perturbation is presented to study the effect of heat and mass transfer on free convection flow with a uniform suction and injection over a cone in a micropolar fluid. The velocity, temperature, concentration and microrotation profiles were computed for various values of suction/injection, Schmidt number and micropolar parameters. The governing equations are first cast into a dimensionless form by a nonsimilar transformation and the resulting equations are then solved numerically by using the Runge-Kutta numerical integration, the procedure in conjunction with the shooting technique. The results indicate that as the micropolar parameter increases the wall couple stress, the shear stress, the Nusselt number and Sherwood number decrease with it. While the Shmidt number increases the shear stress, the wall couple stress and Nusselt number decrease, the opposite is true for the Sherwood number. The results are shown in figures and tables followed by a quantitative discussion.
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