77 citations · 282 across the 21 of their papers we have counts for
20 papers · 1 filter
Numerical simulation of a two-frequency-driven superlattice Faraday-wave pattern
Debashis Panda, Nicolas Périnet, Abdullah M. Abdal +6
The formation of a superlattice pattern in two-frequency-driven Faraday waves discovered and named SSS-I by Arbell & Fineberg (1998, 2002) is investigated by means of Direct Numeri…
Jet coronation: Coexistence of compressible and incompressible dynamics
H. Watanabe, K. Hashimoto, W. K. A. Worby +4
This paper is associated with a poster winner of a 2025 American Physical Society's Division of Fluid Dynamics (DFD) Gallery of Fluid Motion Award for work presented at the DFD Gal…
Interfacial standing wave-patterns disentangle dilatational and shear surface viscous effects
Debashis Panda, Abdullah M. Abdal, Mosayeb Shams +5
Dilatational and shear surface viscosities are highly correlated parameters, making their individual contributions difficult to disentangle in Stokes flow, linearised flow models,…
Direct numerical simulation of two-phase flows with surfactant-induced surface viscous effects
Debashis Panda, Seungwon Shin, Abdullah M. Abdal +4
Direct numerical simulations of interfacial flows with surfactant-induced complexities involving surface viscous stresses are performed within the framework of the Level Contour Re…
Marangoni-driven patterns, ridges, and hills in surfactant-covered parametric surface waves
Debashis Panda, Lyes Kahouadji, Laurette Tuckerman +4
Parametric oscillations of an interface separating two fluid phases create nonlinear surface waves, called Faraday waves, which organise into simple patterns, like squares and hexa…
Surfactant-laden bubble bursting: dynamics of capillary waves and Worthington jet at large Bond number
Paula Pico, Lyes Kahouadji, Seungwon Shin +3
We present a numerical study of the main sub-stages preceding aerosol formation via bursting bubbles: capillary wave propagation along the bubble, convergence at the bubble's apex,…
Drop encapsulation and bubble bursting in surfactant-laden flows in capillary channels
Paula Pico, Lyes Kahouadji, Seungwon Shin +3
We present a parametric study of the unsteady phenomena associated with the flow of elongated gas bubbles travelling through liquid-filled square capillaries under high Weber numbe…
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 kidney stones in renal pelvis flow
C. R. Constante-Amores, L. Kahouadji, J. G. Williams +6
We examine the time-dependent flow dynamics inside an idealised renal pelvis in the context of a surgical procedure for kidney stone removal, extending previous work by Williams et…
An AI-based Domain-Decomposition Non-Intrusive Reduced-Order Model for Extended Domains applied to Multiphase Flow in Pipes
Claire E. Heaney, Zef Wolffs, Jón Atli Tómasson +7
The modelling of multiphase flow in a pipe presents a significant challenge for high-resolution computational fluid dynamics (CFD) models due to the high aspect ratio (length over…
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…
The transition to aeration in two-phase mixing in stirred vessels
Lyes Kahouadji, Assen Batchvarov, Cristian R. Constante Amores +5
We consider the mixing of a viscous fluid by the rotation of a pitched blade turbine inside an open, cylindrical tank, with air as the lighter fluid above. To examine the flow and…
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…
Numerical simulation of super-square patterns in Faraday waves
L. Kahouadji, N. Périnet, L. S. Tuckerman +3
We report the first simulations of the Faraday instability using the full three-dimensional Navier-Stokes equations in domains much larger than the characteristic wavelength of the…