Effects of thermal radiation and chemical reactions on peristaltic flow of a Newtonian nanofluid under inclined magnetic field in a generalized vertical channel using homotopy perturbation method

In this paper, we study the influences of inclined magnetic field, heat source, thermal radiation, and chemical reactions on peristaltic flow of a Newtonian nanofluid in a vertical generalized (tapered asymmetric) channel. The flow is engendered because of an asymmetric sinusoidal wave on the non‐uniform channel walls. The Rosseland approximation is viewed in the modeling of the conduction radiation heat transfer, and temperatures of the walls are presumed constants. The governing equations are uttered in a non‐dimensional form, and the series solutions of coupled system of equations are constructed for temperature and nanoparticle concentration using a homotopy perturbation method. Analytical solutions have been developed for stream function and axial velocity. Numerical integrations have been applied to receive the graphical results for an average rise in pressure. The variations of various interesting dimensionless parameters are sketched and discussed. It is observed that the temperature profile increases with an increase of the non‐uniform parameter, while it decreases when the thermal radiation parameter is increased.