Blasius and Sakiadis flow of a Casson hybrid nanofluid over a moving plate

Abstract

ABSTRACT It is generally known that adding a particular amount of nanoparticles to a traditional liquid improves its thermal conductivity. The cause of this dramatic improvement is yet unclear. As a result, determining the proper thermal impact of particles at the nanoscale requires understanding the kinematics of nanoparticle suspension. Bearing this in mind, the primary goal of this research is to investigate thermophoretic particle deposition on a Blasius-Sakiadis flow of a Casson hybrid nanoliquid flow over a moving plate. In this case, a 50% Ethylene glycol (EG) carrier liquid is used to suspend copper and silver nanoparticles. The governing equations are reduced to ordinary differential equations (ODEs) using appropriate similarity transformations. Then these ODEs are solved using the fourth-fifth order Runge–Kutta Fehlberg's technique (RKF-45) with the shooting methodology. The influence of various non-dimensional factors on involved fields is then discussed in depth using appropriate graphs. The results show that for both Blasius and Sakiadis flows, rise in values of the radiation parameter increase fluid heat transfer. Furthermore, for both Blasius and Sakiadis flows, an increase in the thermophoretic coefficient and thermophoretic parameter degrades the liquid's mass transfer and thermophoretic diffusive deposition velocity.