Abstract
The problem of an axisymmetric translational motion of an incompressible microstretch fluid past an immiscible stationary microstretch droplet in the presence of a uniform magnetic field is investigated. The inertial terms in the equations of motion are neglected, therefore the microstretch scalar function is uncoupled from the stream function and microrotation component. Analytical solutions are obtained for the stream and microstretch scalar functions. The drag acting on the fluid droplet is evaluated. Numerical results for the drag force coefficient versus the relative viscosity, micropolarity parameter, and Hartmann number are tabulated and presented graphically. The results for the drag coefficient are compared with the available solutions in the literature for the limiting cases. (C) 2020 Elsevier Masson SAS. All rights reserved.