Abstract
•Stagnation point flow of micropolar nanofluid over a circular cylinder having sinusoidal radius variation is examined.•Analysis in magnetohydrodynamic and slip regime.•Microorganisms are also incorporated with nanoparticles.•Numerical solutions are computed by Runge-Kutta-Fehlberg scheme.
The concerned problem is dedicated to study stagnation point flow of MHD micropolar nanomaterial fluid over a circular cylinder having sinusoidal radius variation. Velocity jump slip phenomenon with porous medium is also taken into account. To be more specific, the physical situation of micropolar fluid in the presence of both weak and strong concentration is mathematically modeled in terms of differential equations. Here, three nanoparticles namely Titania (TiO2), Copper (Cu) and Alumina (Al2O3) compared with water as base fluids are incorporated for analysis. The resulting non-linear system has been solved by Runge-Kutta-Fehlberg scheme. Numerical solutions for velocities and temperature profiles are settled for alumina–water nanofluid and deliberated through graphs and numerical tables. It is seen that the skin friction coefficients and the rate of heat transfer are maximum for copper–water nanofluid related to the alumina–water and titania–water nanofluids. Also, the precision of the present findings is certified by equating them with the previously published work.