Abstract
To understand the dynamic mechanics of a droplet in the still water, two-phase CFD simulations are carried out together with flow visualization and PIV measurements. Our CFD method incorporates a MAC-type NS solver and a front capturing technique by using the maker density function. The CFD method indicates the defomation, zigzag trajectory and the vortex shedding from it, each of which is compared well with the measurements. The method also presents the mass transfer at the interface of a droplet and the resultant Sherwood number agrees well with the solution of an experimental equation.
