Dynamics of active and passive control on bioconvection Carreau nanofluid with thermal radiation and Cattaneo-Christov double-diffusion effects

Abstract

An investigation has been discovered to explore the mixed convective Carreau fluid flow comprising gyrotactic microorganisms and the Darcy Forchheimer effect over a Riga sheet. The Cattaneo-Christov dual diffusive has been examined to accurately represent the thermal and concentration dynamics, providing a detailed description of energy and concentration equations. The analysis of nanoparticles involves the examination of both passive control (where there is no mass movement) and active control (where there is mass movement), taking into account the influence of Brownian motion, thermophoresis, and thermal radiation. An alter transmission is applied to transmute the constitution equation into a model equation. The converted equations are then solved numerically using the Keller box method. The study presents and analyzes data on velocity, temperature, concentration, microorganism dispersion, and key engineering parameters like drag coefficient, Nusselt number, Sherwood number, and motile density. The results are visually represented using graphs and tables. It has been noted that when the Schmidt number and solutal relaxation parameter increase, the concentration profile reduces for both active and passive control of nanoparticles. Moreover, increased values of the fluid parameter and Hartmann number result in heightened fluid velocity. A comparison of the current research with the formerly obtained results is given showing an excellent agreement.