Comment on Influence of convective boundary condition on double diffusive mixed convection from a permeable vertical surface, by P.M. Patil, E. Momoniat, S. Roy, International Journal of Heat and Mass Transfer, 70 (2014) 313-321

TL;DR

This paper investigates the effects of convective boundary conditions on double diffusive mixed convection along a permeable vertical surface, using numerical methods to analyze flow, temperature, and concentration profiles.

Contribution

It introduces a numerical approach to analyze double diffusive mixed convection with convective boundary conditions on a permeable vertical plate.

Findings

Flow and temperature profiles are significantly affected by boundary conditions.

Concentration distribution varies with suction/injection rates.

Numerical results provide detailed insights into flow behavior under mixed convection.

Abstract

In the above paper the authors treat the boundary layer flow along a stationary, vertical, permeable, flat plate within a vertical free stream. Fluid is sucked or injected through the vertical plate. The fluid species concentration at the plate is constant and different from that of the ambient fluid. It is also assumed that the plate is heated by convection from another fluid with constant temperature with a constant heat transfer coefficient. The temperature and species concentration difference between the plate and the ambient fluid creates buoyancy forces and the flow is characterized as mixed convection. The partial differential equations of the boundary layer flow (Eqs. 1-4 in their paper) are transformed and subsequently are solved numerically using an implicit finite difference scheme in combination with a quasi-linearization technique. The quasi-linearization technique is a Newton-Raphson method. The results are presented in 12 figures.