Relaxation analysis and entropy simulation of triple diffusive slip effect on magnetically driven Casson fluid flow

Abstract

ABSTRACT In this article, we explore a novel numerical solution of a triple diffusive flow of Casson fluid taking slip boundary condition on a stretching sheet along with suction and magnetic field effects. Total entropy generation in flow of viscous fluid under coupling effects of concentrations of two heterogeneous salts () is evaluated by different Bejan numbers. Magnetic Bejan number and mass Bejan number have been defined for the estimation of novel irreversibilities due to salts’ concentrations and magnetic retardation over the non-linearly stretching sheet. Order reduction and then finite difference techniques are employed on system of equations thus obtained. Persuasive iterative scheme, successive over relaxation method, encoded via MATLAB has been utilized to numerically simulate discretised system of ordinary differential equations. Significant impacts of prime parameters on entropy generation rate and different Bejan numbers are physically interpreted through graphs for both linear as well as non-linear stretching cases. Magnetic force tends to decrease the entropy generation rate while enhances the magnetic Bejan number considerably. Entropy generation rate in triple diffusion is higher than double diffusion. Outcomes may be useful in automobiles industries, waste-water treatment, petroleum industries, food processing mills and mechanical systems under controlled conditions.