Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: P2.8 - Advantages of Rij - e turbulence model for dispersed droplet flow in a vertical pipe
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Title: P2.8 - Advantages of Rij - e turbulence model for dispersed droplet flow in a vertical pipe Multiphase Flows with Heat and Mass Transfer
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Baalbaki, D.
Toutant, A.
Bataille, F.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
Subject: turbulent flow
dispersed droplet flow
second order turbulence model
Abstract: Dispersed droplet flow is a flow type that exists in a pressurized water reactor’s core subchannels after a LOCA (Loss Of Coolant Accident). The spatial distribution of the droplets is a basic characteristic that influences the dynamic and the thermal exchanges. In a turbulent flow, the turbulence of the vapor has an effect on droplets’ spatial distribution over the domain. The model of turbulence of the continuous phase should be compatible with dispersed droplet flow. In the present work, the effect of turbulent models on a dispersed droplet flow is analyzed. The geometry presented in this paper is a long tube similar to a core sub channel between four tubes. After a general description of the droplets flow characteristics in this geometry, a comparison between the two models of turbulence k 􀀀 " and Rij 􀀀 " is done. The effect of the turbulent kinetic energy at the entry is tested. These tests show that the characteristics of the turbulence at the entry have an effect on the droplets’ distribution because of the big inertia of these droplets. The simulation of the turbulent structure at the entry is an important factor in this case. We show the need of a second order Rij􀀀" model that is more capable to represent the anisotropy of the turbulence structure at the entry.
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: VID00480
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: P28-Baalbaki-ICMF2010.pdf

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