Numerical Investigation of Droplet Dynamics in Recirculating Flows Using LBM

Droplet dynamics in a recirculating flow is investigated in this work. In this regard, Lattice Boltzmann simulation is performed to study the problem. To give a perspective on the physics of this problem, time evolution of the droplet behaviour and the global flow pattern is investigated. Finding show that droplets with different density ratios have different path lines and different shapes of deformations. Also, diameter effects as an important parameter that affects the dynamics of the droplet are studied. Another parameter which should be regarded is the first position of the droplet in the flow domain due to the forces that global flow pattern exert on the drop and change the shape of the drop. To create a recirculation flow a lid driven cavity with moving upper wall is considered here.