Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: 13.3.1 - Design of a High Temperature Axial Viewing System for Experimental Studies of Single Tube Reflood
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Title: 13.3.1 - Design of a High Temperature Axial Viewing System for Experimental Studies of Single Tube Reflood Experimental Methods for Multiphase Flows
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Zeng, Y.J.
Hale, C.P.
Walker, S.P.
Hewitt, G.F.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
Subject: LB-LOCA
PWR reflood
axial viewing technique
Abstract: Within a Pressurised Water Reactor (PWR) system, one of the most significant postulated accidents is a Large Break Loss-of-Coolant Accident (LB-LOCA). In this scenario it is assumed that one of the inlet pipes (“cold legs”), connecting the circulating pump to the reactor vessel, is completely broken so that the pipe ends separate to allow free discharge of the primary coolant from both broken ends. In the case of LB-LOCA inside a pressurised water reactor, four main phases take place, namely blowdown, refill, reflood and long term cooling. This paper describes experiments intended to produce detailed information about the macroscopic behaviour of the steam-water flows occurring during the reflood phase, specifically during bottom-up rewetting, where water droplets may be entrained in the vapour flow and contribute to cooling of the hot fuel pin before it is quenched. In these experiments the single tube test section is initially preheated to temperatures up to 400 °C and then quenched by introducing water at the bottom of the tube at atmospheric pressure. During the course of this transient process a high-temperature axial viewing technique is applied to observe the quench front, and any pre-cursory droplet production.
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: VID00323
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 1331-Zeng-ICMF-2010.pdf

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