52 citations · 140 across the 16 of their papers we have counts for
19 papers
Surfactant-induced Marangoni stresses and surface viscosity in Faraday instability
Bochang Wang, C. Ricardo Constante-Amores
We investigate the influence of insoluble-surfactant elasticity and Boussinesq-Scriven surface viscosity on the parametric instability of an interface separating two viscous fluids…
Droplet-triggered Faraday waves in a vertically forced bath
Fahim Tanfeez Mahmood, C. Ricardo Constante-Amores
Repeated impacts of a droplet on a vertically forced bath can produce a growing Faraday-wave response under forcing conditions for which the corresponding initially undisturbed bat…
Relative periodic orbits in spatially extended Kolmogorov turbulence: from global to localized recurrence
Yaning Liu, C. Ricardo Constante-Amores
Recurrent invariant solutions provide a dynamical framework for interpreting turbulence, but their computation becomes increasingly difficult in spatially extended flows, where clo…
Confinement-Induced Suppression of Jet Drop Size by Bubble Bursting in Shallow Liquids
Zhengyu Yang, Vatsal Sanjay, C. Ricardo Constante-Amores +1
Bubble bursting is a major source of aerosol generation in a wide range of natural and industrial systems. While the resulting jet dynamics have been extensively studied in deep li…
Bursting bubbles in Herschel-Bulkley fluids: dynamics and jetting transitions
A. H. Ghaemi, Z. Yang, A. Huang +3
When a bubble rises to a free surface, its bursting dynamics in Newtonian fluids are governed by the interplay between viscous, capillary, and gravitational forces. In this work, w…
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…
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…
Elastoinertial turbulence: Data-driven reduced-order model based on manifold dynamics
Manish Kumar, C. Ricardo Constante-Amores, Michael D. Graham
Elastoinertial turbulence (EIT) is a chaotic state that emerges in the flows of dilute polymer solutions. Direct numerical simulation (DNS) of EIT is highly computationally expensi…
Predicting extreme events in a data-driven model of turbulent shear flow using an atlas of charts
Andrew J. Fox, C. Ricardo Constante-Amore, Michael D. Graham
Dynamical systems with extreme events are difficult to capture with data-driven modeling, due to the relative scarcity of data within extreme events compared to the typical dynamic…
Impact of droplets onto surfactant-laden thin liquid films
C. R. Constante-Amores, L. Kahouadji, S. Shin +5
We study the effect of insoluble surfactants on the impact of surfactant-free droplets on surfactant-laden thin liquid films via a fully three-dimensional direct numerical simulati…
Direct numerical simulations of turbulent jets: vortex-interface-surfactant interactions
C. R. Constante-Amores, T. Abadie, L. Kahouadji +5
We study the effect of insoluble surfactants on the spatio-temporal evolution of turbulent jets. We use three-dimensional numerical simulations and employ an interface-tracking/lev…
Role of surfactant-induced Marangoni stresses in retracting liquid sheets
C. R. Constante-Amores, J. Chergui, S. Shin +3
In this work, we study the effect of insoluble surfactants on the three-dimensional rim-driven retraction dynamics of thin water sheets in air. We employ an interface-tracking/leve…
Role of surfactant-induced Marangoni stresses in drop-interface coalescence
C. R. Constante-Amores, A. Batchvarov, L. Kahouadji +4
We study the effect of surfactants on the dynamics of a drop-interface coalescence using full three-dimensional direct numerical simulations. We employ a hybrid interface-tracking/…
Direct numerical simulations of transient turbulent jets: vortex-interface interactions
Cristian R. Constante-Amores, Lyes Kahouadji, Assen Batchvarov +4
The breakup of an interface into a cascade of droplets and their subsequent coalescence is a generic problem of central importance to a large number of industrial settings such as…
Rico and the jets: Direct numerical simulations of turbulent liquid jets
C. R. Constante-Amores, L. Kahouadji, A. Batchvarov +4
This paper is associated with a poster winner of a 2019 American Physical Society Division of Fluid Dynamics (DFD) Milton van Dyke Award for work presented at the DFD Gallery of Fl…
Three-dimensional dynamics of falling films in the presence of insoluble surfactants
Assen Batchvarov, Lyes Kahouadji, Cristian R. Constante-Amores +5
We study the effect of insoluble surfactants on the wave dynamics of vertically-falling liquid films. We use three-dimensional numerical simulations and employ a hybrid interface-t…
Effect of surfactant on elongated bubbles in capillary tubes at high Reynolds number
Assen Batchvarov, Lyes Kahouadji, Mirco Magnini +6
The effect of surfactants on the tail and film dynamics of elongated gas bubbles propagating through circular capillary tubes is investigated by means of an extensive three-dimensi…
Dynamics of a surfactant-laden bubble bursting through an interface
C. R. Constante-Amores, L. Kahouadji, A. Batchvarov +4
We study the effect of surfactant on the dynamics of a bubble bursting through an interface. We perform fully three-dimensional direct numerical simulations using a hybrid interfac…
Dynamics of retracting surfactant-laden ligaments at intermediate Ohnesorge number
C. R. Constante-Amores, L. Kahouadji, A. Batchvarov +4
The dynamics of ligaments retracting under the action of surface tension occurs in a multitude of natural and industrial applications, such as inkjet printing and atomisation. We p…