Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Luzzatto‐Fegiz, Paolo"'
Autor:
Tomlinson, Samuel D., Gibou, Frédéric, Luzzatto-Fegiz, Paolo, Temprano-Coleto, Fernando, Jensen, Oliver E., Landel, Julien R.
Motivated by microfluidic applications, we investigate drag reduction in laminar pressure-driven flows in channels with streamwise-periodic superhydrophobic surfaces (SHSs) that are contaminated with soluble surfactant. We develop a model in the long
Externí odkaz:
http://arxiv.org/abs/2406.15251
We present a systematic simulation campaign to investigate the pairwise interaction of two mobile, monodisperse particles submerged in a viscous fluid and subjected to monochromatic oscillating flows. To this end, we employ the immersed boundary meth
Externí odkaz:
http://arxiv.org/abs/2403.04304
Autor:
Mcnair, Richard, Temprano-Coleto, Fernando, Peaudecerf, François J., Gibou, Frédéric, Luzzatto-Fegiz, Paolo, Jensen, Oliver E., Landel, Julien R.
Experiments have shown that surfactant introduced to a liquid-filled maze can find the solution path. We reveal how the maze-solving dynamics arise from interactions between the added surfactant and endogenous surfactant present at the liquid surface
Externí odkaz:
http://arxiv.org/abs/2311.08133
Autor:
Tomlinson, Samuel D., Gibou, Frédéric, Luzzatto-Fegiz, Paolo, Temprano-Coleto, Fernando, Jensen, Oliver E., Landel, Julien R.
Publikováno v:
J. Fluid Mech. 1000 (2024) A62
Recognising that surfactants can impede the drag reduction resulting from superhydrophobic surfaces (SHSs), we investigate the impact of spatio-temporal fluctuations in surfactant concentration on the drag-reduction properties of SHSs. We model the u
Externí odkaz:
http://arxiv.org/abs/2310.18184
Wind tunnels are a key source of data collection, but their cost and size can be a significant obstacle to their acquisition and usage, especially for applications such as instrument calibration, instruction, or in-class demonstrations. Here we propo
Externí odkaz:
http://arxiv.org/abs/2310.12101
Autor:
Liang, Xichen, Karnaukh, Kseniia M., Zhao, Lei, Seshadri, Serena, DuBose, Austin J., Bailey, Sophia J., Cao, Qixuan, Cooper, Marielle, Xu, Hao, Haggmark, Michael, Helgeson, Matthew E., Gordon, Michael, Luzzatto-Fegiz, Paolo, de Alaniz, Javier Read, Zhu, Yangying
Fast and programmable transport of liquid droplets on a solid substrate is desirable in microfluidic, thermal, biomedical, and energy devices. Past research has focused on designing substrates with asymmetric structures or gradient wettability where
Externí odkaz:
http://arxiv.org/abs/2305.07002
Autor:
Tomlinson, Samuel D., Peaudecerf, François, Temprano-Coleto, Fernando, Gibou, Frederic, Luzzatto-Fegiz, Paolo, Jensen, Oliver E., Landel, Julien R.
Superhydrophobic surfaces (SHSs) can reduce the friction drag in turbulent flows. In the laminar regime, it has been shown that trace amounts of surfactant can negate this drag reduction, at times rendering these surfaces no better than solid walls (
Externí odkaz:
http://arxiv.org/abs/2302.01634
Autor:
Tomlinson, Samuel D., Gibou, Frédéric, Luzzatto-Fegiz, Paolo, Temprano-Coleto, Fernando, Jensen, Oliver E., Landel, Julien R.
While superhydrophobic surfaces (SHSs) show promise for drag reduction applications, their performance can be compromised by traces of surfactant, which generate Marangoni stresses that increase drag. This question is addressed for soluble surfactant
Externí odkaz:
http://arxiv.org/abs/2209.04834
Autor:
Luzzatto-Fegiz, Paolo
We examine the problem of performing simultaneous and coplanar Particle Image Velocimetry (PIV) and Laser-Induced Fluorescence (LIF) measurements in a stratified fluid initially at rest. Our focus is on enabling detailed velocity and density measurem
Externí odkaz:
http://arxiv.org/abs/2207.05455
Autor:
Rommelfanger, Nicholas, Vowinckel, Bernhard, Wang, Zixuan, Dohrmann, Reiner, Meiburg, Eckart, Luzzatto-Fegiz, Paolo
Cohesive effects between fine-grained sediment particles greatly influence their effective settling rate and erodibility. Many studies have observed a qualitative difference in settling dynamics between clays in freshwater, where particles remain dis
Externí odkaz:
http://arxiv.org/abs/2203.15545