Publications de Martino Reclari

On the hysteresis of cavitation incipience and desinence in hydraulic machines

Mohamed Farhat, Ali Amini, Martino Reclari

The omnipresent vortical structures in hydraulic machines are extremely prone to the occurrence of cavitation. It is well known that besides the flow parameters, the incipience, development, and disappearance of cavitation within a vortex is very sensitive ...

IOP PUBLISHING LTD2019

Suppressing tip vortex cavitation by winglets

Mohamed Farhat, Ali Amini, Martino Reclari

Despite the numerous remedies prescribed so far, tip vortex cavitation (TVC) remains a major issue in design and operation of diverse applications. In this paper, we experimentally investigate the effectiveness of winglets in suppressing TVC. An elliptical ...

SPRINGER2019

Roll-up region of tip vortex: numerical investigation

Mohamed Farhat, Azin Amini, Matthieu Dreyer, Ali Amini, Martino Reclari

The appearance of gas-filled vortices at the tip of hydraulic machines blades is usually associated with increase of losses, vibrations, noise and erosion risk. The understanding of the roll-up region, where the boundary layer on the pressure side crosses ...

IOP PUBLISHING LTD2019

On the physical mechanism of tip vortex cavitation hysteresis

Mohamed Farhat, Matthieu Dreyer, Ali Amini, Martino Reclari

Inception and desinence thresholds of tip vortex cavitation (TVC), generated by an elliptical NACA 16-020 hydrofoil, are measured at different flow conditions for various gas contents. It is observed that TVC often disappears at cavitation indices signific ...

SPRINGER2019

Hydrodynamics of orbital shaken bioreactors

Martino Reclari

Be it to aerate a glass of wine before tasting, to accelerate a chemical reaction or to cultivate cells in suspension, the “swirling” (or orbital shaking) of a container ensures good mixing and gas exchange in a simple and intuitive way. Despite being used ...

EPFL2013

Hydrodynamic stress in orbitally shaken bioreactors

Alfio Quarteroni, Florian Maria Wurm, Mohamed Farhat, David Hacker, Lucia Baldi Unser, Matthieu Dreyer, Marco Discacciati, Stéphanie Tissot, Martino Reclari, Samuel Quinodoz

2011

Efficient and reproducible mammalian cell bioprocesses without probes and controllers?

Florian Maria Wurm, Mohamed Farhat, David Hacker, Lucia Baldi Unser, Matthieu Dreyer, Stéphanie Tissot, Martino Reclari, Agata Oberbek

Bioprocesses for recombinant protein production with mammalian cells are typically controlled for several physicochemical parameters including the pH and dissolved oxygen concentration (DO) of the culture medium. Here we studied whether these controls are ...

Elsevier2011