11 papers
Pinch-off dynamics for a Newtonian liquid thread draining in a viscoplastic medium
Shu Yang, Konstantinos Zinelis, Sourojeet Chakraborty +1
The pinch-off dynamics of a Newtonian liquid thread embedded in a viscoplastic medium is investigated using direct numerical simulations and theory. Thread breakup occurs below a n…
Predicting liquid properties and behavior via droplet pinch-off and machine learning
Jingtao Wang, Qiwei Chen, C Ricardo Constante-Amores +3
Here we demonstrate that the time-evolving interface observed during droplet formation, and consequently the resulting morphology nearing pinch-off, encode sufficient physical info…
End-pinching and inertial-capillary reopening in viscoplastic ligaments at low Ohnesorge number
Shu Yang, Fahim Tanfeez Mahmood, C. Ricardo Constante-Amores
Capillary retraction of liquid ligaments is well understood for Newtonian fluids, whereas viscoplastic effects remain comparatively unexplored. Here, we consider Herschel-Bulkley f…
Stabilizing Rayleigh-Benard convection with reinforcement learning trained on a reduced-order model
Qiwei Chen, C. Ricardo Constante-Amores
Rayleigh-Benard convection (RBC) is a canonical system for buoyancy-driven turbulence and heat transport, central to geophysical and industrial flows. Developing efficient control…
Exact coherent states underlying chaotic falling-film dynamics
Isaac J. G. Lewis, C. Ricardo Constante-Amores
Dynamical-systems approaches to spatiotemporal chaos have been developed primarily for single-phase flows, where the system state is defined by bulk velocity fields. Extending thes…
Low-dimensional multiscale dynamics of intermittent reversals in turbulent Rayleigh-Benard convection
Qiwei Chen, C. Ricardo Constante-Amores
We investigate whether a strongly turbulent flow with intermittent large-scale reorganizations admits a compact state-space description. As a representative high-dimensional chaoti…