Person
Nicolas Igor Jacques Kofman
Related publications (6)
Film thickness distribution in gravity-driven pancake-shaped droplets rising in a Hele-Shaw cell
François Gallaire, Gioele Mariano Nicolò Balestra, Nicolas Igor Jacques Kofman, Lailai Zhu, Isha Shukla
We study here experimentally, numerically and using a lubrication approach, the shape, velocity and lubrication film thickness distribution of a droplet rising in a vertical Hele-Shaw cell. The droplet is surrounded by a stationary immiscible fluid and mov ...
CAMBRIDGE UNIV PRESS2019Dynamics of falling films on the outside of a vertical rotating cylinder: waves, rivulets and dripping transitions
François Gallaire, Nicolas Igor Jacques Kofman
Falling liquid films on the underside of a plate or on the outside of a rotating cylinder are subject to a destabilizing body force. The evolution of the film topology is determined by interactions between the Kapitza and the Rayleigh-Taylor instability, l ...
Cambridge University Press2017Three-dimensional Rayleigh–Taylor instability under a unidirectional curved substrate
François Gallaire, Gioele Mariano Nicolò Balestra, Nicolas Igor Jacques Kofman, Pierre-Thomas Paul Brun
We investigate the Rayleigh–Taylor instability of a thin liquid film coated on the inside of a cylinder whose axis is orthogonal to gravity. We are interested in the effects of geometry on the instability, and contrast our results with the classical case o ...
2017Characteristics of solitary waves on a falling liquid film sheared by a turbulent counter-current gas flow
We report an experimental investigation of a falling water film sheared by a turbulent counter-current air flow in an inclined rectangular channel. Film thickness and wave velocity measurements associated with visual observation are conducted to study the ...
Elsevier2017Critical inclination for absolute/convective instability transition in inverted falling films
Liquid films flowing down the underside of inclined plates are subject to the interaction between the hydrodynamic and the Rayleigh-Taylor (R-T) instabilities causing a patterned and wavy topology at the free surface. The R-T instability results from the d ...
Amer Inst Physics2016Selection of solitary waves in vertically falling liquid films
Two-dimensional solitary waves at the surface of a film flow down a vertical plane are considered. When the system is subjected to inlet white noise, solitary waves are formed after an inception region and interact with each other. Using open-domain simula ...
Elsevier2016