Abstract Encouraged by many scientific and industrial uses of non-Newtonian nanofluids, this study investigates the two-dimensional convective hydromagnetic movement in a bioconvective micropolar nanofluid inside an elongating porous region with convective boundary constraints and binary reaction processes. The flow of the nanofluid involving thermal radiation, activation energy and magnetic field is modelled by developing mathematical model. Through the similarity transformations, the governing model is transformed into system of non-linear ordinary differential equations. To numerically solve the system of equations, MATLAB’s built-in ‘bvp4c’ package is used. Micropolar fluid velocity, micro-rotation, temperature, concentration and density of self-propelling microorganisms etc. are all graphically represented. From results, it has been concluded that velocity profile declines with increment in the porosity, micropolar, and magnetic parameters. While thermal profile strengthens as the radiant heat variable, Eckert numbers, and Brownian motion variable increases. Moreover, with increase in the value of thermophoresis parameter, the motile profile decreases more rapidly.
Chaudhry et al. (Thu,) studied this question.