Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

Volumes:
Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v27.i2-4.120
pages 331-362

Numerical Analysis of Multiphase Mixing - Comparison of First and Second Order Accurate Schemes

M. Leskovar
"Jozef Stefan" Institute, Slovenia
Jure Marn
University of Maribor, Slovenia
Borut Mavko
Reactor Engineering Division, "Jozef Stefan" Institute, Jamova 39, 1000 Ljubljana, SLOVENIA

RÉSUMÉ

During a severe reactor accident following core meltdown when the molten fuel comes into contact with the coolant water a steam explosion may occur. The steam explosion can be divided into more stages. The first, premixing stage is important since it gives the initial conditions of the possible steam explosion and determines the maximum quantity of melt, which might be then involved into the explosion. To investigate the mixing process associated with the melt penetration a large number of premixing codes has been developed.
The purpose of this work is to analyze the influence of first and second order accurate numerical schemes on the premixing phase simulation results and to find out if a probabilistic treatment of some terms in the multiphase flow equations introduces any advantages. For performing this kind of analysis the simple premixing code ESE has been developed.
With ESE a number of premixing experiments performed at the Oxford University and at the QUEOS facility at Forschungszentrum Karlsruhe has been simulated using the first order accurate upwind method and the second order accurate high-resolution method. The performed analysis showed that the results obtained with the first and second accurate numerical schemes differ and that the probabilistic approach has an almost negligible effect on the simulation results.


Articles with similar content:

THEORETICAL INVESTIGATION ON VARIABLE-DENSITY SPRAYS
Atomization and Sprays, Vol.12, 2002, issue 1-3
T. Donateo, Arturo De Risi, D. Laforgia
CHANG-LIN TIEN'S CONTRIBUTIONS TO LIQUID PHASE CHANGE AND HEAT PIPES
Annual Review of Heat Transfer, Vol.14, 2005, issue 14
Per F. Peterson, Van P. Carey, Frank M. Gerner
HEAT TRANSFER IN NUCLEAR REACTOR SAFETY. International Seminar 1980
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1988, issue
S. George Bankoff
A TWO-PHASE FLOW HEAT TRANSFER CORRELATION PACKAGE SUITABLE FOR A PRESSURIZED WATER REACTOR SAFETY CODE
International Heat Transfer Conference 8, Vol.5, 1986, issue
J. C. Micaelli, C. Renault
NUMERICAL STUDY OF MACROSCOPIC FLOW INSTABILITIES ASSOCIATED WITH NATURAL CIRCULATION LOOPS UNDER SUPERCRITICAL CONDITIONS
International Heat Transfer Conference 13, Vol.0, 2006, issue
Michael L. Corradini, R. Jain