Magnetohydrodynamic stratified bioconvective flow of micropolar nanofluid due to gyrotactic microorganisms

The forthright purpose of this communication is to inspect the flow of magnetohydrodynamic (MHD) stratified micropolar bioconvective fluid containing nanoparticles and gyrotactic microorganism. The phenomenon of thermal radiation and Joule heating has also been incorporated. In order to stabilize the suspended nanoparticles, bioconvection which is established by the combined effects of magnetic field and buoyancy force is implemented. A system of PDEs is converted into the ODEs by invoking the appropriate similarity transformation and the transformed equations are then solved by the well known shooting technique. The interesting aspects of sundry parameters on the velocity, the angular velocities, the temperature, concentration and the motile microorganism density are examined and sketched. The skin friction and the couple stress coefficients, the heat and mass transfer rates and the local density number of the motile microorganism have been numerically computed and discussed. Our analysis depicts that the temperature, concentration and motile microorganism density depreciate for the increment in the material parameter. An enhancement in the buoyancy ratio parameter results an enhancement in the energy and the motile microorganism density profile whereas the velocity profile is reduced. (C) 2019 Author(s).