Automatic tracking of corona propagation in three-dimensional simulations of non-normal drop impact on a liquid film.

*(English)*Zbl 1310.76013Summary: A novel procedure for tracking the propagation of the corona observed after the impact of liquid drops on thin films is proposed for the case of non-normal drop impacts. Three-dimensional adaptive-grid simulations are performed for different impingement angles and Weber numbers. In the numerical model, the Navier-Stokes equations are complemented with the Volume-Of-Fluid (VOF) method to model the gas-liquid interface. In the considered cases, the main features of the corona dynamics determined using the proposed technique are consistent with the three-dimensional description of the flow.

##### MSC:

76A20 | Thin fluid films |

65M50 | Mesh generation, refinement, and adaptive methods for the numerical solution of initial value and initial-boundary value problems involving PDEs |

76D05 | Navier-Stokes equations for incompressible viscous fluids |

76T10 | Liquid-gas two-phase flows, bubbly flows |

65M08 | Finite volume methods for initial value and initial-boundary value problems involving PDEs |

76-04 | Software, source code, etc. for problems pertaining to fluid mechanics |

##### Software:

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\textit{P. Brambilla} and \textit{A. Guardone}, Computing 95, No. 5, 415--424 (2013; Zbl 1310.76013)

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##### References:

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