14 papers
Rheology of Two-Dimensional Dilute Emulsions
Thomas Appleford, Vatsal Sanjay, Maziyar Jalaal
The single droplet under shear is a foundational problem in fluid mechanics. In computational fluid dynamics, the two-dimensional (2D) formulation offers advantages in both computa…
Cage Breaking Far from Equilibrium
Jared Popowski, Nico Schramma, Edan Lerner +1
Active matter can flow and yield under conditions where passive matter jams and slows down, as self-propulsion significantly modulates particle escape from local cages. How activit…
Non-Reciprocal Capillary Waves
Holly du Plessis, Pedro Cosme, Hugo França +1
Capillary waves are a classical free-surface phenomenon in fluid mechanics, yet their behavior in chiral fluids remains largely unexplored. We show that odd viscosity breaks the re…
Coalescence of Printed Yield Stress Filaments in Direct Ink Writing
Hugo L. França, Daniël Tieman, James D. Shemilt +2
In direct ink writing (DIW), neighbouring filaments of yield-stress inks are deposited side-by-side and are expected to merge into smooth, mechanically robust structures. Unlike Ne…
Fragmentation and aggregation of cyanobacterial colonies
Yuri Z. Sinzato, Robert Uittenbogaard, Petra M. Visser +2
Fluid flow has a major effect on the aggregation and fragmentation of bacterial colonies. Yet, a generic framework to understand and predict how hydrodynamics affects colony size r…
Spreading droplets of yield-stress fluids with and without gravity
Linnea Heitmeier, Olfa D'Angelo, Maziyar Jalaal +1
We investigate the effect of gravity on the spreading of droplets of yield stress fluids, by performing both microgravity experiments (in a drop tower) and experiments under terres…