### Abstract

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.

Original language | English |
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Title of host publication | Chemeca 2008: Towards a Sustainable Australasia |

Place of Publication | Barton, A.C.T. |

Publisher | Engineers Australia |

Pages | 1174-1183 |

Number of pages | 10 |

ISBN (Print) | 858258234 |

Publication status | Published - 2008 |

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## Cite this

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