Gallery
A slender bubble in a simple shear flow.
A slender bubble in a simple shear flow.
Streamlines of a spherical drop in a positive (E > 0) nonlinear extensional creeping flow. Contrary to the linear case (E = 0), a closed circulation is developed in the external fluid (E >> 1).
Streamlines of a spherical drop in a positive (E > 0) nonlinear extensional creeping flow. Contrary to the linear case (E = 0), a closed circulation is developed in the external fluid (E >> 1).
Streamlines of a spherical drop in a negative (E < 0) nonlinear extensional creeping flow. Contrary to the linear case (E = 0), a separating surface is created. When E < -3/7, the number of internal circulations is doubled.
Streamlines of a spherical drop in a negative (E < 0) nonlinear extensional creeping flow. Contrary to the linear case (E = 0), a separating surface is created. When E < -3/7, the number of internal circulations is doubled.
Streamlines of a spherical compound drop (double emulsion) in an extensional creeping flow, for different radii ratios.
Streamlines of a spherical compound drop (double emulsion) in an extensional creeping flow, for different radii ratios.
Deformation of a compound drop (double emulsion) in an extensional creeping flow. Black: before deformation (Ca = 0). Blue: uniaxial flow (Ca > 0), outer drop prolate spheroid, inner drop oblate spheroid. Red: biaxial flow (Ca < 0), outer drop oblate spheroid, inner drop prolate spheroid.
Deformation of a compound drop (double emulsion) in an extensional creeping flow. Black: before deformation (Ca = 0). Blue: uniaxial flow (Ca > 0), outer drop prolate spheroid, inner drop oblate spheroid. Red: biaxial flow (Ca < 0), outer drop oblate spheroid, inner drop prolate spheroid.
Velocity vectors of a spherical compound drop (double emulsion) in a uniform creeping flow. The drag force on the outer surface is in the +z direction, while the drag force on the inner drop is in the -z direction, leading to a non concentric situation. A concentric double emulsion droplet (meta-stable) may be established (under certain restrictions) by the addition of a body force such as gravity.
Velocity vectors of a spherical compound drop (double emulsion) in a uniform creeping flow. The drag force on the outer surface is in the +z direction, while the drag force on the inner drop is in the -z direction, leading to a non concentric situation. A concentric double emulsion droplet (meta-stable) may be established (under certain restrictions) by the addition of a body force such as gravity.