3 papers
physics.flu-dyn2022
Prediction of resistance induced by surface complexity in lubricating layers: Application to super-hydrophobic surfaces
Noura Bettaieb, Marco Castagana, Pierre-Yves Passaggia +2
Super Hydrophobic (SH) coatings are widely used to mitigate drag in various applications. Numerous studies have demonstrated that the beneficial wall-slip effect produced by these…
physics.flu-dyn2018
An Isotropic Porous Medium Approach to Drag Mitigation Disappearance in Super-Hydrophobic Falling Spheres
Marco Castagna, Nicolas Mazellier, Pierre-Yves Passaggia +1
In this Letter, the falling of super-hydrophobic spheres is investigated experimentally at low Reynolds numbers. In particular, we show that super-hydrophobic coatings become ineff…
physics.flu-dyn2018
Wake of super-hydrophobic falling spheres: influence of the air layer deformation
Marco Castagna, Nicolas Mazellier, Azeddine Kourta
We report an experimental investigation of the wake of free falling super-hydrophobic spheres. The mutual interaction between the air layer (plastron) encapsulating the super-hydro…