Concept
Trompe à eau
Publications associées (8)
Numerical investigation of the jet velocity profile and its influence on the Pelton turbine performance
François Avellan, Ebrahim Jahanbakhsh, Audrey Paulette Solange Maertens, Sebastián Camilo Leguizamón Sarmiento, Siamak Alimirzazadeh, Takashi Kumashiro
Numerical investigation of the unsteady flow patterns around the bucket can be helpful to improve the Pelton turbine efficiency. In fact, by studying the loss mechanisms in the flow, one can optimize the bucket design. For this purpose, an accurate investi ...
IOP PUBLISHING LTD2019Improved Two-Side AC Electroosmotic Micropump
This paper reports on the fabrication and experimental characterisation of improved design AC eletroosmotic micropumps. Since the first study and analysis of AC electroosmosis by Ramos et al. [1], many devices have been fabricated and tested [2]. The basic ...
2011Analysis and Prevention of Vortex Breakdown in the Simplified Discharge Cone of a Francis Turbine
François Avellan, Vlad Hasmatuchi
We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model Francis turbine operated at variable discharge and constant head, using an axisymmetric turbulent swirling flow model and a corresponding simplified computa ...
American Society of Mechanical Engineers2010Handling technology of mega-watt millimeter-waves for optimized heating of fusion plasmas
Olivier Sauter, Timothy Goodman, Federico Alberto Alfredo Felici
Millimeter-wave components were re-examined for high power (Mega-Watt) and steady- state (greater than one hour) operation. Some millimeter-wave components, including waveguide joints, vacuum pumping sections, power monitors, sliding waveguides, and inject ...
International Microwave Power Institute2009Qualitative evaluation of alkali release during the pyrolysis of biomass
Christian Ludwig, Alexander Wokaun
The thermochemical emission of alkali metals from biomass samples and two organic salts was investigated for the first time using a novel combination of a th ermogravi metric analyzer with a jet flow condenser attached to a surface ionization detector. Thi ...
2007Chlorosulfonic acid
High-purity HSO3Cl is prepd. at a high space-time yield by mixing and reacting gaseous HCl with SO3 dissolved in ClSO3H, contg. 0.3-1.4% SO3 at 70-100 Deg in a venturi tube at 1-1.1 mol HCl/mol SO3. Thus, into the throat of a vertical venturi tube was fed ...
(Hoechst A.-G., Fed. Rep. Ger.).1979