AbstractBuoyancy‐determined steady, laminar nonlinear convection flow of micropolar nanofluid with Soret effect, viscous dissipation over a cylinder were evaluated numerically using method bvp4c from matlab software for assorted quantities of leading parameters. Mathematical modeling for the flow problem has been completed with fitting resemblance change and dimensionless variable. A variable similarity solution is offered that bases on various quantities of leading parameters. Influences of these parameters on , are tested and displayed with the charts and graphs. The convergence test has been continued; for quantity of spots larger than suitable mesh number of points. The correctness is unchanged, but it takes time. Also, a comparison with prior study reachable in the literature has been offered with very good conformity is got. The findings show that the existence of Soret number agrees to enhance concentration profile , Wall couple stress coefficient and Nusselt number . But the presence of Eckert Number Ec, allows declining velocity, microrotation, temperature, and concentration profiles.