MHD Peristaltic Flow of Micropolar Casson Nanofluid Through a Porous Medium Between Two Co-Axial Tubes

An analysis was made of the MHD mixed convection peristaltic flow of a micropolar nanofluid obeying a non-Newtonian Casson model through a porous medium between two co-axial tubes. The governing partial differential equations were transformed into a set of nonlinear ordinary differential equations under the assumptions of long wavelength and low-Reynolds number approximations. A homotopy perturbation technique was performed to get analytical solutions for that system of equations. The behavior of the axial velocity, microrotation velocity, temperature, and nanoparticles distribution under the effect of various pertinent parameters to these distributions is discussed analytically and graphically. These significant results may help in understanding the mechanics of some complicated physiological flows.