Abstract
This paper investigates the aspects of magnetic field and chemical reaction in Oldroyd-B nanofluid influenced by a stretching cylinder. The properties of mixed convection, nonlinear radiation and heat sink/source are incorporated. By means of noteworthy conversions, the nonlinear PDEs are altered into nonlinear ODEs and elucidated via homotopic approach. The influence of countless variables for velocity, temperature and concentration fields in addition to local Nusselt and Sherwood numbers are portrayed and conferred. These upshots portray that the liquid velocity enhances for intensifying value of mixed convection parameter whereas, it diminish for magnetic parameter. Moreover, the Brownian motion parameter and radiation parameter enhances the liquid temperature of Oldroyd-B nanofluid. For the endorsement of current upshots an assessment values in restrictive circumstances is also presented.