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Analysis of flashing and swelling phenomena in tanks of nuclear power plants; the importance of bubble growth dynamics and bubble transport models with size tracking

Abstract

This paper presents a non-equilibrium model to describe flashing phenomena in tanks and cooling pools. The present model is based on Watanabe's work that we have extended by developing a realistic model for the growth of bubbles. We have made the corresponding venting model, continuity equation, gas and liquid phase energy conservation equations for the model. This model takes into account both drag and virtual mass force. The dynamics of bubble growth plays an important role in two-phase phenomena such as flashing. In our model the growth rate is assumed to be limited by the heat conduction in the liquid. The results of the analytic model were compared with the experimental data of Watanabe [1]. The results have shown that the present model evaluates fairly accurately the pressure evolution, the void fraction and the swelling level of a tank.
Authors:
Cerezo A, E; [1]  Munoz C, J L [2] 
  1. University of Caribe, Department of Basics Sciences and Engineering, Lote 1, Manzana 1, Region 78, esq. Fracc. Tabachines, 77500 Cancun, Quintana Roo (Mexico)
  2. Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia, Camino de Vera 14, 46022 Valencia (Spain)
Publication Date:
Jul 01, 2004
Product Type:
Conference
Report Number:
INIS-MX-1623
Resource Relation:
Conference: 15. Annual Congress of the SNM; 22. Annual Meeting of the SMSR; International Joint Meeting Cancun 2004; International Conjunct Congress Cancun 2004; 2004 LAS/ANS Symposium, Cancun (Mexico), 11-14 Jul 2004; Other Information: PBD: 2004
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BOUNDARY CONDITIONS; BUBBLE GROWTH; COORDINATES; DIAGRAMS; DIFFUSION; DYNAMICS; ENERGY CONSERVATION; ENTHALPY; EQUATIONS; FLASHING; NUCLEAR POWER PLANTS; PRESSURE DEPENDENCE; SWELLING; TANKS
OSTI ID:
20558735
Research Organizations:
Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de Mexico (Mexico); Comision Nacional de Seguridad Nuclear y Salvaguardias, Mexico D.F. (Mexico); Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Comision Federal de Electricidad, Gerencia de Centrales Nucleoelectricas, Mexico D.F. (Mexico)
Country of Origin:
Mexico
Language:
English
Other Identifying Numbers:
TRN: MX0500010013988
Availability:
Available from INIS in electronic form
Submitting Site:
MXN
Size:
12 pages
Announcement Date:
Feb 20, 2005

Citation Formats

Cerezo A, E, and Munoz C, J L. Analysis of flashing and swelling phenomena in tanks of nuclear power plants; the importance of bubble growth dynamics and bubble transport models with size tracking. Mexico: N. p., 2004. Web.
Cerezo A, E, & Munoz C, J L. Analysis of flashing and swelling phenomena in tanks of nuclear power plants; the importance of bubble growth dynamics and bubble transport models with size tracking. Mexico.
Cerezo A, E, and Munoz C, J L. 2004. "Analysis of flashing and swelling phenomena in tanks of nuclear power plants; the importance of bubble growth dynamics and bubble transport models with size tracking." Mexico.
@misc{etde_20558735,
title = {Analysis of flashing and swelling phenomena in tanks of nuclear power plants; the importance of bubble growth dynamics and bubble transport models with size tracking}
author = {Cerezo A, E, and Munoz C, J L}
abstractNote = {This paper presents a non-equilibrium model to describe flashing phenomena in tanks and cooling pools. The present model is based on Watanabe's work that we have extended by developing a realistic model for the growth of bubbles. We have made the corresponding venting model, continuity equation, gas and liquid phase energy conservation equations for the model. This model takes into account both drag and virtual mass force. The dynamics of bubble growth plays an important role in two-phase phenomena such as flashing. In our model the growth rate is assumed to be limited by the heat conduction in the liquid. The results of the analytic model were compared with the experimental data of Watanabe [1]. The results have shown that the present model evaluates fairly accurately the pressure evolution, the void fraction and the swelling level of a tank.}
place = {Mexico}
year = {2004}
month = {Jul}
}