Numerical study of radial deformation and energy conversion in head-on collision of two equal-size droplets

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Abstract

A numerical study on the radial deformation, energy conversion and mass mixing in the head-on collision of two equal-sized droplets is conducted. The axisymmetric incompressible laminar Navier-Stokes equations are solved. The Volume of Fluid method is employed for tracking the liquid-gas interface. The simulation results reveal that the maximum radial deformation of the coalesced droplet increases with the Weber number. A simplified deformation prediction model is proposed for the radial deformation stage of the coalesced droplet. The Weber number has a significant influence on the conversion between kinetic energy and surface energy. Moreover, the mass mixing of colliding droplets is observed by using the tracer particles.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
StatePublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Conference

Conference55th AIAA Aerospace Sciences Meeting
Country/TerritoryUnited States
CityGrapevine
Period01/9/1701/13/17

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