Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: 13.3.4 - Experiments on steam condensation in a 3-scale nozzle using light extinction and high speed camera
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Permanent Link: http://ufdc.ufl.edu/UF00102023/00326
 Material Information
Title: 13.3.4 - Experiments on steam condensation in a 3-scale nozzle using light extinction and high speed camera Experimental Methods for Multiphase Flows
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Dorey, J.-M.
Stanciu, M.
Ren, K.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
 Subjects
Subject: condensation
steam
high speed camera
scale effects
light extinction
 Notes
Abstract: A 3-scale nozzle has been used to generate steam condensation so as to compare droplet sizes and oscillation frequencies . The largest nozzle is 180 mm long while the others are ½ and ¼ smaller. The vein is fed by a steam turbine device allowing the adjustment of the steam quality at the inlet (from supersaturated to slightly wet). Measurements of droplet sizes using the light extinction method have been carried out all along the axis of the three nozzles for different inlet steam conditions. The inversion method provides size and droplet concentrations. The light extinction is used in a large range of wavelength from UV (300 nm) up to 1000 nm. Results show the small influence of inlet wetness in wetness concentration and droplet size. Nozzle scale effects on the droplet size show differences from what is expected from the theory. A high speed camera has been operated at up to 20 000 frames per second showing the oscillations of wetness generation at the throat of the nozzle. The frequency of the oscillations is quite sensitive to the inlet conditions. The results will be used for condensation models validation. Furthermore, these observations and measurements emphasize that it is highly necessary to take into account the non-stationary behavior for modeling the condensation process occurring in steam turbine.
General Note: The International Conference on Multiphase Flow (ICMF) first was held in Tsukuba, Japan in 1991 and the second ICMF took place in Kyoto, Japan in 1995. During this conference, it was decided to establish an International Governing Board which oversees the major aspects of the conference and makes decisions about future conference locations. Due to the great importance of the field, it was furthermore decided to hold the conference every three years successively in Asia including Australia, Europe including Africa, Russia and the Near East and America. Hence, ICMF 1998 was held in Lyon, France, ICMF 2001 in New Orleans, USA, ICMF 2004 in Yokohama, Japan, and ICMF 2007 in Leipzig, Germany. ICMF-2010 is devoted to all aspects of Multiphase Flow. Researchers from all over the world gathered in order to introduce their recent advances in the field and thereby promote the exchange of new ideas, results and techniques. The conference is a key event in Multiphase Flow and supports the advancement of science in this very important field. The major research topics relevant for the conference are as follows: Bio-Fluid Dynamics; Boiling; Bubbly Flows; Cavitation; Colloidal and Suspension Dynamics; Collision, Agglomeration and Breakup; Computational Techniques for Multiphase Flows; Droplet Flows; Environmental and Geophysical Flows; Experimental Methods for Multiphase Flows; Fluidized and Circulating Fluidized Beds; Fluid Structure Interactions; Granular Media; Industrial Applications; Instabilities; Interfacial Flows; Micro and Nano-Scale Multiphase Flows; Microgravity in Two-Phase Flow; Multiphase Flows with Heat and Mass Transfer; Non-Newtonian Multiphase Flows; Particle-Laden Flows; Particle, Bubble and Drop Dynamics; Reactive Multiphase Flows
 Record Information
Bibliographic ID: UF00102023
Volume ID: VID00326
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 1334-Dorey-ICMF2010.pdf

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