### Abstract

A mesoscale model for droplet dynamics based on a quasi-molecular approach is proposed. It considers the interaction between quasi-molecules within a single liquid droplet, each quasi-molecule representing an agglomeration of a large number of actual water molecules. The goal is to improve the understanding of the dynamics of large droplets collisions over dry or wet surfaces at velocities typical of aeronautical applications. This detailed analysis will eventually be used to refine the macroscopic Eulerian description of the water impingement process by providing numerical correlations for splashing and bouncing phenomena. Approaches for extracting macroscopic quantities such as temperature and transport coefficients from the quasi-molecular method are discussed. A proper choice of the free parameter of the model that leads to accurate values of the macroscopic properties is also addressed. To model the droplet impingement process more accurately, the quasimolecular approach is then coupled with a continuum flow solver in order to include the droplet deformation effects due to the external airflow.

Original language | English |
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Title of host publication | 54th AIAA Aerospace Sciences Meeting |

Publication status | Published - 8 Jan 2016 |

Externally published | Yes |

Event | 54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States Duration: 4 Jan 2016 → 8 Jan 2016 |

### Conference

Conference | 54th AIAA Aerospace Sciences Meeting, 2016 |
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Country | United States |

City | San Diego |

Period | 4/01/16 → 8/01/16 |

### Keywords

- supercooled large droplets
- droplet dynamics

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## Cite this

*54th AIAA Aerospace Sciences Meeting*