We introduce a regime of the coalescence cascade of a liquid drop - the damped coalescence cascade (DCC) - where the rebound of daughter drops is suppressed. DCC typically occurs when the surface tension difference between the bath and the drop is larger than a critical value. A local Marangoni flow generated in the bath at every pinch-off is expected to accelerate air drainage in the gap between the daughter drop and the bath, and thus leads to suppression of the rebound of the daughter drop. Both scaling arguments and lubrication calculations demonstrate faster air drainage in the presence of local Marangoni flow.
All Science Journal Classification (ASJC) codes
- Computational Mechanics
- Modeling and Simulation
- Fluid Flow and Transfer Processes