Two-dimensional gyrotactic microorganisms flow of hydromagnetic power law nanofluid past an elongated sheet

Abstract

This article, describes two-dimensional magnetohydrodynamic steady incompressible viscous power law nanofluid comprising gyrotactic microorganisms adjacent to a vertical stretching sheet. The governing non-linear partial differential equations are lessened to a set of non-linear ordinary differential equation using similitude transformation. The non-dimensional boundary value problem is then solved under spectral relaxation method. The influences of different parameters such as buoyancy convection parameters [Formula: see text], magnetic field parameter M, power law parameter [Formula: see text], Prandtl number [Formula: see text], modified Prandtl number [Formula: see text], thermophoresis parameter [Formula: see text], Peclet number [Formula: see text], Lewis number [Formula: see text], Brownian motion parameter [Formula: see text], bioconvection Lewis number [Formula: see text], and bioconvection constant [Formula: see text] on flow convective characteristics phenomena are explored via plots and tables. The skin friction factor, rate of heat transfer, rate of mass transfer, and the density number of the motile microorganisms near the surface are also computed. Our results are compared with the existing results to support our model. Residual error analysis is determined for showing the convergence rate against iteration. Our result showed that the momentum thickness reduces as the value of [Formula: see text] induces and thermal boundary thickness increases as the value of [Formula: see text] induces. We also revealed that the density of the motile microorganisms [Formula: see text] is a reducing function of [Formula: see text] and concentration boundary layer induces with the increase of [Formula: see text], whereas its thickness close to the surface decreases with increasing of [Formula: see text]. Also, the stream line patterns are exhibited to the impact of physical sundry variables.