Role of geometry and fluid properties in droplet and thread formation processes in planar flow focusing

W Lee, LM Walker, SL Anna - Physics of Fluids, 2009 - pubs.aip.org
Droplet formation processes in microfluidic flow focusing devices have been examined
previously and some of the key physical mechanisms for droplet formation revealed …

Nonsingular boundary integral method for deformable drops in viscous flows

IB Bazhlekov, PD Anderson, HEH Meijer - Physics of Fluids, 2004 - pubs.aip.org
A three-dimensional boundary integral method for deformable drops in viscous flows at low
Reynolds numbers is presented. The method is based on a new nonsingular contour …

Competition between viscoelasticity and surfactant dynamics in flow focusing microfluidics

W Lee, LM Walker, SL Anna - Macromolecular Materials and …, 2011 - Wiley Online Library
The goal of this work is to quantify the impact of viscoelasticity on a tipstreaming
phenomenon observed in flow focusing microfluidic devices. Tipstreaming, or thread …

Drop fragment distributions under shear with inertia

Y Renardy, V Cristini, J Li - International Journal of Multiphase Flow, 2002 - Elsevier
A numerical investigation is conducted for a drop of viscous liquid, suspended in another
liquid of the same density and viscosity, and undergoing breakup due to simple shear. The …

Breakup of shear-thinning liquid jets with surfactants

Z Xue, CM Corvalan, V Dravid, PE Sojka - Chemical Engineering Science, 2008 - Elsevier
In this work we consider the nonlinear dynamics of a Carreau liquid jet whose interface is
covered with an insoluble surfactant. We solved the fully coupled system of governing …

Evolution equations for the surface concentration of an insoluble surfactant; applications to the stability of an elongating thread and a stretched interface

MG Blyth, C Pozrikidis - Theoretical and Computational Fluid Dynamics, 2004 - Springer
The general form of the convection–diffusion equation governing the evolution of the surface
concentration of an insoluble surfactant over an evolving interface is reviewed and …

Nonlinear dynamics of core-annular film flows in the presence of surfactant

SA Kas-Danouche, DT Papageorgiou… - Journal of fluid …, 2009 - cambridge.org
The nonlinear stability of two-phase core-annular flow in a cylindrical pipe is studied. A
constant pressure gradient drives the flow of two immiscible liquids of different viscosities …

Temporal analysis of power law liquid jets

Z Gao, K Ng - Computers & fluids, 2010 - Elsevier
In this paper we investigate the breakup mechanisms of power law liquid jets. The viscosity
of the liquid is represented the Carreau–Yasuda model, and the surface tension of the liquid …

Linear instability of viscoelastic nanofluid microjet with the effect of Marangoni convection

MA Hassan - Physica Scripta, 2018 - iopscience.iop.org
The Marangoni convection effect of a viscoelastic nanofluid microjet is considered. The
microjet surface function is obtained depending of the spatially periodic variation of the …

The Instability of an Electrohydrodynamic Viscous Liquid Micro‐Cylinder Buried in a Porous Medium: Effect of Thermosolutal Marangoni Convection

GM Moatimid, MA Hassan - Mathematical Problems in …, 2013 - Wiley Online Library
The electrohydrodynamic (EHD) thermosolutal Marangoni convection of viscous liquid, in
the presence of an axial electric field through a micro cylindrical porous flow, is considered …