Magnetohydrodynamic mixed convection in a vertical channel

Numerical analysis of entropy generation in mixed-convection MHD flow in vertical channel

“…The results show that the temperature increases with increasing ε for both positive and negative values of Ξ. Tables 1 and 2 list the numerical results obtained by the D.T.M for the velocity and temperature field for four different values of the dimensionless channel width with the equivalent analytical results presented by Umavathi et al [6]. It is observed that numerical results and analytical results agree very well.…”

“…Applying the energy balance equation, and taking the effects of Joule heating and viscous dissipation into account, the nonlinear governing equations for the temperature T À Á are obtained as [6] α…”

“…Setayesh and Sahai [5] studied the effect of various temperaturedependent transport properties on the developing MHD flow and heat transfer in a parallel-plate channel in which the walls were held at a constant and equal temperature. Umavathi and Malashetty [6] presented analytical and numerical solutions by a perturbation method for the temperature and velocity fields in a combined free and forced convective MHD flow in a vertical channel. It was shown that the viscous dissipation effect enhanced the flow reversal which occurred when the flow in the downward direction encountered that in the upward direction.…”

Effects of thermal radiation and space porosity on MHD mixed convection flow in a vertical channel using homotopy analysis method

“…In many cases the flow in these devices will be accompanied by heat either that dissipated internally through viscous or Joule heating or that produced by electric currents in the walls. Recently, Umavathi and Malashetty [13] studied the problem of combined free and forced magnetoconvection flow in a vertical channel with symmetric and asymmetric boundary heating in the presence of viscous and Joulean dissipations. More recently Srinivas and Kothandapani [14] investigated the effects of heat and mass transfer on MHD peristaltic flow through a porous space with compliant walls.…”

Mixed convection MHD flow in a vertical channel: Effects of Joule heating and viscous dissipation

“…Situations in which the fully developed laminar flow in a vertical channel is described by nonlinear balance equations occur, for instance, when a magnetohydrodynamic force is present and the thermal generation due to Joule effect is non negligible. In recent years, much attention has been devoted to the study of magnetohydrodynamic effects on natural and mixed convection flows [6][7][8][9][10][11]. Indeed, convective flows in the presence of magnetic fields occur in many technical applications, such as, for instance, the optimization of industrial casting of metals [12].…”