Exploration of cubic autocatalysis and thermal relaxation in a non-Newtonian flow field with MHD effects

Abstract

This paper relates to the study of cubic autocatalysis in non-Newtonian Casson fluid with magnetohydrodynamic (MHD) effects. The homogeneous reaction is supposed to be provided by isothermal cubic autocatalytic kinetics and the heterogeneous reaction by first order kinetics. The boundary layer flow is discussed in case when both reactant and auto-catalyst have equal diffusion coefficients. The thermal relaxation and heat transfer on the flow of Casson fluid is examined through Cattaneo–Christov heat diffusion under the influence of heat generation. The fluid flow is taken over the stretching cylinder. The independent variables in a coupled partial differential system are reduced through similarity transformation. The numerical results for the reduced coupled system are found by means of Runge–Kutta Fehlberg method along with shooting scheme. The fluid temperature trend declines when uplifting thermal relaxation parameter. The fluid concentration trend decreases when increasing the strength of homogeneous and heterogeneous reaction parameter. Also, the heat transfer rate for thermal relaxation parameter is examined numerically.