Effects of Inertia and Viscosity on Single Droplet Deformation in Confined Shear Flow
Samaneh Farokhirad 1, Taehun Lee 1*, Jeffrey F. Morris 21 Department of Mechanical Engineering, City College of City University of New York, New York, New York 10031, USA.
2 Department of Chemical Engineering and Levich Institute, City College of City University of New York, New York, New York 10031, USA.
Received 31 October 2011; Accepted (in revised version) 26 January 2012
Available online 29 August 2012
Lattice Boltzmann simulations based on the Cahn-Hilliard diffuse interface approach are performed for droplet dynamics in viscous fluid under shear flow, where the degree of confinement between two parallel walls can play an important role. The effects of viscosity ratio, capillary number, Reynolds number, and confinement ratio on droplet deformation and break-up in moderately and highly confined shear flows are investigated.
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PACS: 47.11.-j, 47.65.Cb
Key words: Lattice Boltzmann method, droplet deformation, confinement.
Email: firstname.lastname@example.org (S. Farokhirad), email@example.com (T. Lee), firstname.lastname@example.org (J. F. Morris)