Slip-flow and heat transfer of chemically reacting micropolar fluid through expanding or contracting walls with Hall and ion slip currents

摘要: Abstract The present article deals with the effects of velocity slip, chemical reaction on heat and mass transfer micropolar fluid in expanding or contracting walls Hall ion slip currents. Assume that there is symmetric suction injection along channel walls, which are maintained at nonuniform constant temperatures concentrations. governing Navier–Stokes equations reduced to nonlinear ordinary differential by using similarity transformations then solved numerically quasilinearization technique. various parameters such as wall expansion ratio, parameter, Prandtl number, Schmidt nondimensional components, microrotation, temperature concentration discussed detail through graphs. It observed enhanced viscosity. Further, increased whereas microrotation decreased for an contraction walls.