Lateral migration of a drop in plane Poiseuille flow at finite Reynolds numbers

A finite difference/front tracking method has been used to examine the lateral migration of a three-dimensional deformable drop in plane Poiseulle flow at finite Reynolds numbers. The method is based on writing one set of governing equations for the whole computational domain and treating the different phases as one fluid with variable material properties. Neutrally buoyant drops are studied. The computation is performed within a unit cell which is periodic in the direction along the channel. Results showed that all drops move to an equilibrium position about halfway between the centerline and the wall. Compare to rigid particles, for deformable drops, the wall repulsion increases and this effect moves the equilibrium position closer to the centerline of the channel.

کلیدواژه ها:

Poiseulle flow ، finite difference method ، front tracking method ، drop ، Reynolds number