Resumo

MALEQUE, Kh. A. A binary chemical reaction on unsteady free convective boundary layer heat and mass transfer flow with arrhenius activation energy and heat generation/absorption. Lat. Am. appl. res. [online]. 2014, vol.44, n.1, pp. 97-104. ISSN 1851-8796.

We investigate a local similarity solution of an unsteady natural convection heat and mass transfer boundary layer incompressible fluid flow past a moving vertical porous plate in the presence of the heat absorption and generation. The effects of chemical reaction rate which is function of temperature and Arrhenius activation energy on the velocity, temperature and concentration are also studied in this paper. The governing partial differential equations are reduced to ordinary differential equations by introducing local similarity transformation (Maleque, 2010a). Numerical solutions to the reduced non-linear similarity equations are then obtained by adopting Runge-Kutta and shooting methods using the Nachtsheim- Swigert iteration technique. The results of the numerical solution are then presented graphically in the form of velocity, temperature and concentration profiles. The corresponding skin friction coefficient, the Nusselt number and the Sherwood number are also calculated and displayed in table showing the effects of various parameters on them

Palavras-chave : Heat and Mass Transfer; Chemical Reaction; Activation Energy; Porous Plate; Heat Generation/Absorption.