We use immiscible lattice-gas automata to study the collision of two drops in a linear shear field for a range of Reynolds number, Re, and Capillary number, Ca, at a single fixed viscosity ratio and impact parameter. We observe the full range of collision scenarios - coalescence in the compressional and extensional quadrants, 'kiss-and-break', where the drops coalesce in the extensional quadrant before breaking up into two or more drops, and non-coalescence - depending on Re and Ca. Limited results suggest that the regions of the Re-Ca space associated with these collision scenarios are not separated by distinct boundaries but, rather, transition zones in which the probabilities of the two outcomes vary in a complementary fashion from one to the other.
|Title of host publication||Chemeca 2008: Towards a Sustainable Australasia|
|Place of Publication||Barton, A.C.T.|
|Number of pages||10|
|Publication status||Published - 2008|
Biggs, M. J., Layfield, R., Mijajlovic, M., Buts, A., & Duursma, G. R. (2008). Explicit Numerical Simulation of Binary Drop Collision in a Linear Shear Field at Finite Reynolds Numbers. In Chemeca 2008: Towards a Sustainable Australasia (pp. 1174-1183). Engineers Australia. https://search.informit.com.au/documentSummary;dn=779373642345359;res=IELENG