Soluções híbridas por transformadas integrais para o escoamento magnetohidrodinâmico com transferência de calor em canais de placas paralelas

Abstract

The present study is to analyze the dynamics of the magnetohydrodynamic flow of electrical conductors newtonian fluids within a parallel flat plate channel subjected to a uniform external magnetic field, wherein the mathematical formulation of the model is given in terms of stream-function, obtained from the Navier-Stokes equations and the Energy Equation. The adopted assumptions are steady state, laminar and incompressible flow and constant physical properties. It is also admitted that the external magnetic field applied in the normal direction of flow remains uniform, not being thus influenced by any internal magnetic effect. For the solution of the governing equations, the Generalized Integral Transform Technique (GITT) is applied to this system of partial differential equations and a hybrid solution (numerical and analytical), which is computationally implemented using the programming scientific language FORTRAN 90. In order to illustrate the consistency of the integral transformation, convergence analysis is performed and presented. Results for velocity and temperature fields as well as potential correlates are generated and compared with the literature on the basis of the main parameters of government. An in-depth analysis of parametric sensitivity of the main dimensionless parameters such as the Reynolds number, Hartmann number, Eckert number, electric parameter and Prandtl number for some typical situations is performed.