Droplet dynamics in a bifurcating channel

Författare: Carlson, A.C., Do-Quang, M., Amberg, G.A.
Dokumenttyp: Artikel
Tillstånd: Publicerad
Tidskrift: International Journal of Multi-Phase Flow
Volym: 36   397
År: 2010


In the present paper we present a phenomenological description of droplet dynamics in a bifurcating channel that is based on three-dimensional numerical experiments using the Phase Field theory. Droplet dynamics is investigated in a junction, which has symmetric outflow conditions in its daughter branches. We identify two different flow regimes as the droplets interact with the tip of the bifurcation, splitting and non-splitting. A distinct criterion for the flow regime transition is found based on the initial droplet volume and the Capillary (Ca) number. The Rayleigh–Plateau instability is identified as a driving mechanism for the droplet breakup close to the threshold between the splitting and non-splitting regime.