Etude expé́rimentale du transport hydraulique de grandes particules en conduite horizontale et en forme de S
Communication avec acte
Date
2011Résumé
We study the pressure drop and flow regimes for large spheres with respect to the diameter of the pipe (5, 10 and 15%) by differential pressure measurements and visualizations. Two densities are used. The losses are smaller for large grain sizes, and density has a strong effect on the transition point between regimes with a stationary bed flow and dispersed flows. Models based on the Froude number are tested. Finally, we study mixtures of size and / or density. We are also interested in plugging and unplugging transients.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lectureTOMOV, Petar; KHELLADI, Sofiane; RAVELET, Florent; SARRAF, Christophe; BAKIR, Farid; VERTENOEUIL, P. (Elsevier, 2015)The injection of bubbles into an already cavitating flow is a way of influencing the typical cavitating behavior. The present article deals with experiments on aerated and non-aerated cavitation in a transparent horizontal ...
-
Article dans une revue avec comité de lectureLARABI, Abderrahim; PEREIRA, Michael; RAVELET, Florent; AZZAM, Tarik; OUALLI, Hamid; MENFOUKH, Laiche; BAKIR, Farid (Inderscience Publishers, 2022)The aim of this study is to investigate the influence of disturbed freestream flow by a small cylinder on the laminar separated boundary layer over NACA0012 wing operating at a Reynolds number of Rec = 4.45 × 105. A detailed ...
-
Article dans une revue avec comité de lectureNGUYEN, Van Thang; DANLOS, Amélie; SOLIS, Moises; KHELLADI, Sofiane; BAKIR, Farid; RAVELET, Florent; DELIGANT, Michael (MDPI AG, 2021)Centrifugal compressors are widely used in many industrial fields such as automotive, aviation, aerospace. However, these turbomachines suffer instability phenomenon when the flow rate is too high or too low, called rotating ...
-
Article dans une revue avec comité de lectureNGUYEN, Van-Thang; ABED, Cheikh Brahim; DANLOS, Amelie; PARIDAENS, Richard; KHELLADI, Sofiane; BAKIR, Farid; RAVELET, Florent; DELIGANT, Michael (American Society of Mechanical Engineers, 2021)The present study deals with a low pressure-ratio centrifugal compressor consisting of two counter-rotating rotors called a Counter-Rotating Centrifugal Compressor (CRCC). The design method based on the loss model was ...
-
Article dans une revue avec comité de lectureNGUYEN, Van-Thang; DANLOS, Amelie; SOLIS, Moises; KHELLADI, Sofiane; BAKIR, Farid; RAVELET, Florent; DELIGANT, Michael (EDP Sciences, 2021)Centrifugal compressors are widely used in many industrial applications because of their advantages. However, these turbomachines suffer at a low-flow rate from instabilities, such as rotating stall and surge. That leads ...