Perspectives on viscoelastic flow instabilities and elastic turbulence
Viscoelastic fluids are a common subclass of rheologically complex materials that are
encountered in diverse fields from biology to polymer processing. Often the flows of …
encountered in diverse fields from biology to polymer processing. Often the flows of …
Mechanism of vorticity amplification by elastic waves in a viscoelastic channel flow
Y Li, V Steinberg - Proceedings of the National Academy of …, 2023 - National Acad Sciences
Inertia-less viscoelastic channel flow displays a supercritical nonnormal mode elastic
instability due to finite-size perturbations despite its linear stability. The nonnormal mode …
instability due to finite-size perturbations despite its linear stability. The nonnormal mode …
From laminar to chaotic flow via stochastic resonance in viscoelastic channel flow
Y Li, V Steinberg - Physical Review Research, 2024 - APS
Recent research indicates that low-inertia viscoelastic channel flow experiences
supercritical nonnormal mode elastic instability from laminar to sustained chaotic flow due to …
supercritical nonnormal mode elastic instability from laminar to sustained chaotic flow due to …
Nonmodal elastic instability and elastic waves in weakly perturbed channel flow
R Shnapp, V Steinberg - Physical review fluids, 2022 - APS
In this paper, we present experimental results and reveal that strong perturbations are not
necessary for elastic instability to occur in straight-channel, inertialess, viscoelastic flows at …
necessary for elastic instability to occur in straight-channel, inertialess, viscoelastic flows at …
Pressure measurements in an elastically turbulent co-moving Kelvin-Helmholtz-like shear flow inside a straight Hele-Shaw cell
V Steinberg - arXiv preprint arXiv:2401.09710, 2024 - arxiv.org
As an experimental model to mimic the flow of bio-fluids in the cell and the flow in tiny blood
capillaries, we study the co-moving shear flow of dilute polymeric solutions. An inflection …
capillaries, we study the co-moving shear flow of dilute polymeric solutions. An inflection …
Elastic waves in a Hele-Shaw cell with a co-moving Kelvin-Helmholtz-like parallel shear flow
V Steinberg - arXiv preprint arXiv:2401.08955, 2024 - arxiv.org
We report the presence of traveling Elastic Waves in experiments featuring a shear flow in
the very low Reynolds number regime (Re< 0.1) with no external curvatures or internal …
the very low Reynolds number regime (Re< 0.1) with no external curvatures or internal …