Network simulation method applied to radiation and viscous dissipation effects on MHD unsteady free convection over vertical porous plate |
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Authors: | Joaquín Zueco Jordán |
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Institution: | Department of Thermal Engineering and Fluids, Technical University of Cartagena, Campus Muralla del Mar, Cartagena 30202, Spain |
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Abstract: | The effects of thermal radiation and viscous dissipation on magneto-hydrodynamic (MHD) unsteady free-convection flow over a semi-infinite vertical porous plate are analysed. The fluid considered is non-gray (absorption coefficient dependent on wave length). The Network Simulation Method is used to solve the boundary-layer equations based on the finite-difference formulation; only discretization of the spatial co-ordinates is necessary, while time remains as a real continuous variable. This method provides a solution for both transient and steady-state problems at the same time, and programming does not require manipulation of the sophisticated mathematical software that is inherent in other numerical methods. The velocity, temperature, local skin-friction and local Nusselt number are studied for different parameters, including the radiation parameter, Eckert number, magnetic number and suction (or injection). |
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Keywords: | Natural convection Thermal radiation Non-gray MHD Viscous dissipation Network model |
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