Exploration of bioconvection flow of MHD thixotropic nanofluid past a vertical surface coexisting with both nanoparticles and gyrotactic microorganisms

Olubode Kolade Koriko,Jae Dong Chung,S Saleem,Adeola John Omowaye,Tosin Oreyeni,Nehad Ali Shah

doi:10.1038/s41598-021-96185-y

Abstract

This communication presents analysis of gravity-driven flow of a thixotropic fluid containing both nanoparticles and gyrotactic microorganisms along a vertical surface. To further describe the transport phenomenon, special cases of active and passive controls of nanoparticles are investigated. The governing partial differential equations of momentum, energy, nanoparticles concentration, and density of gyrotactic microorganisms equations are converted and parameterized into system of ordinary differential equations and the series solutions are obtained through Optimal Homotopy Analysis Method (OHAM). The related important parameters are tested and shown on the velocity, temperature, concentration and density of motile microorganisms profiles. It is observed that for both cases of active and passive control of nanoparticles, incremental values of thermophoretic parameters corresponds to decrease in the velocity distributions and augment the temperature distributions.

Highlights

This communication presents analysis of gravity-driven flow of a thixotropic fluid containing both nanoparticles and gyrotactic microorganisms along a vertical surface
Oreyeni and Omokhuale[5] considered an analytic approach to MHD natural convection flow of thixotropic fluid subject to thermal stratification, it was reported in the study that incremental values of the thixotropic parameters correspond to increase in the velocity distributions for both
Entropy generation in second grade magnetohydrodynamic nanofluid flow over a convectively heated stretching sheet with nonlinear thermal radiation and viscous dissipation was studied by Mondal et al.[15], they discovered that, thermophoresis parameter acts to increase the temperature of the fluid

Summary

Introduction

This communication presents analysis of gravity-driven flow of a thixotropic fluid containing both nanoparticles and gyrotactic microorganisms along a vertical surface.

Results

Conclusion