Cavitation Dynamics at Sub-Millimeter Scale
Communication avec acte
Résumé
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.
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Article dans une revue avec comité de lectureLONG, Kunpeng; GE, Mingming;
BAYEUL-LAINÉ, Annie-Claude;
COUTIER-DELGOSHA, Olivier (AIP publishing, 2022-11)
The present paper is devoted to the analysis of the various instabilities of cavitation attached to a two-dimensional (2D) profile. Time resolved stereo Particle Image Velocimetry (PIV) was conducted in a small-scale 2D ... -
Article dans une revue avec comité de lectureThe present paper is devoted to characterizing the three-dimensional effects in a cavitating flow generated in a Venturi-type profile. Experimental measurements based on 2D3C(Two-dimensionalthree-component) stereoscopic ...
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Article dans une revue avec comité de lectureDANLOS, Amélie; MÉHAL, Jean-Elie;
RAVELET, Florent;
COUTIER-DELGOSHA, Olivier;
BAKIR, Farid (American Society of Mechanical Engineers, 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 ... -
Article dans une revue avec comité de lectureADAMA MAIGA, Mahamadou; BUISINE, Daniel;
COUTIER-DELGOSHA, Olivier (SAGE Publications (UK and US), 2015)
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