Capillary Replacement in a Tube Prefilled with a Viscous Fluid

Drop formation in viscous flows at a vertical capillary tube

Drop formation at the tip of a vertical, circular capillary tube immersed in a second immiscible fluid is studied numerically for low-Reynolds-number flows using the boundary integral method. The evolution and breakup of the drop fluid is considered to assess the influences of the viscosity ratio l , the Bond number B, and the capillary number C for 10<l<10, 10<C<1, and 0.1<B<5. For very small ...

Prefilled Syringes for Viscous Formulations

www.ondrugdelivery.com 27 In this article, Mahesh Chaubal, PhD, Senior Director, Drug Development, R&D Medical Products, Baxter Healthcare Corporation, provides a glimpse of some of the challenges faced during the development of viscous formulations of biopharmaceutical products for injection, from a formulator’s perspective, especially when the finished product is filled in a prefilled syringe...

Dynamics of immiscible-fluid displacement in a capillary tube.

Capillary breakup of a viscous thread surrounded by another viscous fluid

Previous long-wavelength analyses of capillary breakup of a viscous fluid thread in a perfectly inviscid environment show that the asymptotic self-similar regime immediately prior to breakup is given by a balance between surface tension, inertia, and extensional viscous stresses in the thread. In contrast, it is shown here that if viscosity in the external fluid, however small, is included then...

Peristaltic pumping of viscous fluid in an elastic tube

D. TAKAGI AND N. J. BALMFORTH† Institute of Theoretical Geophysics, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK Department of Mathematics, University of British Columbia, 1984 Mathematics Road, Vancouver, V6T 1Z2, Canada Department of Earth and Ocean Science, University of British Columbia, 6339 Stores Road, Vancouv...