Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: P2.12 - Modeling the interaction between a liquid jet and a plasma flow with a compressible approach
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 Material Information
Title: P2.12 - Modeling the interaction between a liquid jet and a plasma flow with a compressible approach Multiphase Flows with Heat and Mass Transfer
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Caruyer, C.
Vincent, S.
Meillot, E.
Caltagirone, J.P.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
Subject: liquid injection
compressible model
multiphase flow
Abstract: Liquid precursor plasma spraying is a recent process which allows producing thinner material coatings than in conventional plasma spraying. The final deposit quality depends on several parameters, which are not yet well known. In this work, the modeling of the interaction between a plasma flow and a liquid jet is investigated in order to better understand physical phenomena and improve the process. The simulation tool is based on the Computational Fluid Dynamic library Thetis, developed at the TREFLE laboratory. An original compressible model, which allows taking into account compressible character of plasma, is proposed. This model is capable of managing incompressible two-phase flows as well as turbulent compressible motions. A new Volume Of Fluid SubMesh (VOF-SM) method is used to account for interface motions. The liquid can be injected into the plasma as a continuous or fragmented jet. First the interaction between a train of liquid drops, corresponding to a fragmented jet in Rayleigh mode, and an ArH2 plasma is simulated. A parametric study on the Weber number is led to characterize break-up regimes. A local study is carried out in order to understand the physical mechanisms which drive the problem at small scale and to determine if the existing macroscopic fragmentation models are appropriate to suspension plasma spraying. Then the numerical simulation of an ArH2 plasma flow interacting with a continuous water jet is studied. The continuous jet disintegrates in plasma jet and forms ligaments in a primary break up and then droplets in a secondary break-up. The speed of break-up depends on the Weber number.
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: VID00482
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: P212-Caruyer-ICMF2010.pdf

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