Fig 1 - uploaded by Raphael Vallon
Content may be subject to copyright.
25: Réponse d'un régulateur PIDàPIDà un signal carré. Le point de consigné etant le niveau haut de ce signal.

25: Réponse d'un régulateur PIDàPIDà un signal carré. Le point de consigné etant le niveau haut de ce signal.

Source publication
Article
Full-text available
Le thème central de ce travail est le développement expérimental d’une méthode spectroscopique intracavité laser visant à augmenter la sensibilité des expériences de fluorescence induite par laser (LIF) et analysée par spectrométrie par transformée de Fourier (FTS) haute résolution. Cette augmentation passe par la réalisation du couplage d’une cavi...

Similar publications

Article
Full-text available
The partial catalytic oxidation (PCO) of H2O- and CO 2-diluted methane/air mixtures to synthesis gas over supported rhodium was investigated experimentally and numerically at pressures of 4 to 12 bar. In situ, spatially resolved Raman measurements of the major gas-phase species concentrations over the catalyst boundary layer and planar Laser Induce...
Chapter
Full-text available
This study investigates by experiment the influence of the blowing ratio (BR) on the flow structures of an inclined turbulent jet in crossflow (JICF). The experiment was conducted in a water tunnel with the jet issuing from a round nozzle inclined at streamwise-oriented 35º, practically relevant to the film cooling configuration. Laser Induced Fluo...
Article
Full-text available
One of the most promising technique for temperature measurement is the Laser Induced Fluorescence (LIF) which utilize basic concept of optical, non-intrusive measurements and give possibility to visualize the temperature distribution in the whole two-dimensional plane at once. A major problem of a LIF is it still unsatisfactory accuracy for tempera...
Article
Full-text available
Buoyancy driven mixing of fluids of different densities (ρ 1 and ρ 2) in a long circular tube is studied experimentally at the local scale as a function of the tilt angle from vertical (15°≤θ≤60°) and of the Atwood number [10 -3≤At=(ρ 2-ρ 1)/(ρ 2+ρ 1)≤10 -2]. Particle Image Velocimetry (PIV) and Laser Induced Fluorescence (LIF) measurements in a ve...
Article
Full-text available
A laser sheet imaging system with Mie-scattering and Laser Induced Fluorescence (LIF) was used to investigate the spray characteristics of gasoline, methanol and ethanol fuels. A range of conditions found in today's gasoline engines were investigated including that observed during engine cold-start. Both a swirl injector and a multi-hole fuel injec...