Transient mixed convective flow of reactive viscous fluid in vertical tube

Abstract

The problem of fully-developed transient mixed convection flow of viscous reactive fluid in a vertical tube is analysed both analytically and numerically. The study reports the effect of several operating parameters on the flow hydrodynamics and thermal characteristics. The solutions for transient velocity and temperature fields are obtained by implicit finite difference method. To check the accuracy of the numerical solution steady-state solutions for temperature and velocity field are obtained by using perturbation series method. Skin-friction and Nusselt number at the surface of tube are determined. A selected set of graphical results illustrating the effects of the various parameters involved in the problem including mixed convection parameter, pressure gradient, reactant consumption parameter on the velocity and temperature profiles as well as flow reversal situations and Nusselt numbers are presented and discussed.