4 papers
Species Transport Driven by Droplet Impact in Wavy Thin Films
Hatim Ennayar, Frederik Roy Patria, Jeanette Hussong
Droplet impact on thin liquid films is commonly studied on quiescent surfaces, although practical systems often involve residual capillary waves generated by preceding droplets. Th…
Two-Color LIF investigation of mixing during droplet impact onto a thin liquid film
Hatim Ennayar, Jeanette Hussong
A two-color laser-induced fluorescence (2C-LIF) technique is presented for investigating droplet impact on thin liquid films, enabling simultaneous, spatially and temporally resolv…
Droplet impact on surfactant-laden thin liquid films: Vortex ring dynamics
Hatim Ennayar, Hyoungsoo Kim, Jeanette Hussong
Droplet impact on surfactant-laden thin liquid films is investigated experimentally with emphasis on vortex ring dynamics. Bottom- and side-view imaging reveal that increasing surf…
On the vortex ring formation and mixing in thin films upon droplet impact
Hatim Ennayar, Juan Camilo Dueñas Torres, Juan Camilo Dueñas Torres +3
When a droplet impacts a liquid film, a vortex ring form and govern momentum and species transport. We experimentally investigate vortex ring formation, propagation and instability…