The droplet ejection process driven by the growth of an evaporating bubble in a micro nozzle is investigated by numerically solving the conservation equations for mass, momentum and energy. The phase interfaces are tracked by a level set method which ...
The droplet ejection process driven by the growth of an evaporating bubble in a micro nozzle is investigated by numerically solving the conservation equations for mass, momentum and energy. The phase interfaces are tracked by a level set method which is modified to include the effects of phase change at the interface and extended for multiphase flows with irregular solid boundaries. Based on the numerical results, the jet breaking and droplet formation behavior is observed to depend strongly on the bubble growth pattern. Various heating conditions are tested to investigate their effect on droplet formation associated with bubble growth.