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Title of article :
Droplet dynamics in a bifurcating channel
Author/Authors :
Carlson، نويسنده , , A. and Do-Quang، نويسنده , , M. and Amberg، نويسنده , , G.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
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Abstract :
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.
Keywords :
Droplet dynamics , Cahn–Hilliard , Bifurcating channels , Wetting , Rayleigh–Plateau instability , Passive breakup
Journal title :
International Journal of Multiphase Flow
Serial Year :
Link To Document :