6 papers · 1 filter
Transport and removal of a passive tracer in porous media employing surface washing
Georgia Ioannou, Francesco Paolo Cont`o, Merlin A. Etzold +2
This experimental study investigates the dynamics of surface washing to remove a passive tracer from a porous plate by a gravity-driven liquid film across its surface. A disodium f…
Drag reduction in surfactant-contaminated superhydrophobic channels at high Péclet numbers
Samuel D. Tomlinson, Frédéric Gibou, Paolo Luzzatto-Fegiz +3
Motivated by microfluidic applications, we investigate drag reduction in laminar pressure-driven flows in channels with streamwise-periodic superhydrophobic surfaces (SHSs) contami…
Dye Attenuation Without Dye: Quantifying Concentration Fields with Short-wave Infrared Imaging
George T. Fortune, Merlin A. Etzold, Julien R. Landel +1
Dye attenuation, or photometric imaging, is an optical technique commonly used in fluid dynamics to measure tracer concentration fields and fluid thicknesses under the assumption t…
Three-dimensional diffusive-thermal instability of flames propagating in a plane Poiseuille flow
Aiden Kelly, Prabakaran Rajamanickam, Joel Daou +1
The three-dimensional diffusive-thermal stability of a two-dimensional flame propagating in a Poiseuille flow is examined. The study explores the effect of three non-dimensional pa…
Confinement-induced drift in Marangoni-driven transport of surfactant: a Lagrangian perspective
Richard Mcnair, Oliver E. Jensen, Julien R. Landel
Successive drops of coloured ink mixed with surfactant are deposited onto a thin film of water to create marbling patterns in the Japanese art technique of Suminagashi. To understa…
Unsteady evolution of slip and drag in surfactant-contaminated superhydrophobic channels
Samuel D. Tomlinson, Frédéric Gibou, Paolo Luzzatto-Fegiz +3
Recognising that surfactants can impede the drag reduction resulting from superhydrophobic surfaces (SHSs), we investigate the impact of spatio-temporal fluctuations in surfactant…