Cavitation Dynamics at Sub-Millimeter Scale
Type
Communications avec actesAbstract
This paper is focused on the dynamics of cloud cavitation at Sub-millimeter scales, between 0.1 and 10 mm. A simple flow configuration consisting in a small diameter jet impacting a wall at 90° and then flowing radially between two plates is used. Cavitation is obtained in the gap between the two plates, due to the local flow acceleration. The scale of the setup was changed by varying separately the gap between the two plates, and the nozzle diameter. Observations were performed from the transparent bottom plate, using a high-speed camera and intense illumination, for various Reynolds and cavitation numbers. The analysis is focused on the variations of the cavity length and the Strouhal number based on the characteristic frequency of the flow instability.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
ALLAB, Yacine; KINDINIS, Andrea; BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; COUTIER-DELGOSHA, Olivier (2014)More than a well-being, providing a good Indoor Climate Quality (ICQ) in education buildings is necessary for students’ health and in order to maximize academic results. In the context of a research focusing on hybrid ...
-
KHLIFA, Ilyass; COUTIER-DELGOSHA, Olivier; FUZIER, Sylvie; HOCEVAR, Marko; VABRE, Alexandre; FEZZAA, Kamel (2013)A promising method to measure velocity fields in complex two-phase flows such us cavitating flows is presented. Dynamics of the liquid phase and the bubbles are both investigated. The measurements are based on ultra fast ...
-
DANLOS, Amélie; MÉHAL, Jean-Elie; RAVELET, Florent; COUTIER-DELGOSHA, Olivier; BAKIR, Farid (ASME, 2014)Instabilities of a partial cavity developed on a hydrofoil, a converging-diverging step, or in an interblade channel have already been investigated in many previous works. The aim of this study is to evaluate a passive ...
-
ORTEGO, Egoï; DAZIN, Antoine; CAIGNAERT, Guy; COLAS, Frédéric; COUTIER-DELGOSHA, Olivier (TU Wien, 2012)Modelling of a hydro-pneumatic energy storage system is the main aim of this paper. The project aims to model a prototype that uses a rotodynamic multi-stage pump-turbine to displace a virtual liquid piston for air ...
-
FRIKHA, Sobhi; COUTIER-DELGOSHA, Olivier; ASTOLFI, Jacques Andre (Hindawi Publishing Corporation, 2008)For numerical simulations of cavitating flows, many physical models are currently used. One approach is the void fraction transport equation-based model including source terms for vaporization and condensation processes. ...