ERMSAR 2012, Cologne March 21 – 23, 2012 A SARNET Benchmark on two VULCANO Molten Core Concrete Interaction Tests C. Journeau 1, J.F Haquet 1, B. Letexier.

Slides:



Advertisements
Similar presentations
Evaporation of Liquid Chlorides in Closed Tanks using the PHOENICS Code Presentation of a Rigid Interface Model (RIModel) Olivier PRAT 1,3 - Jalil OUAZZANI.
Advertisements

University of Minho School of Engineering Institute for Polymer and Composites Uma Escola a Reinventar o Futuro – Semana da Escola de Engenharia - 24 a.
Hongjie Zhang Purge gas flow impact on tritium permeation Integrated simulation on tritium permeation in the solid breeder unit FNST, August 18-20, 2009.
CSNI/WG-RISK – LEVEL 2 PSA AND ACCIDENT MANAGEMENT WORKSHOP – MARCH ADVANCED MODELING AND RESPONSE SURFACE METHODOLOGY FOR PHYSICAL MODELS OF LEVEL.
INRNE-BAS MELCOR Pre -Test Calculation of Boil-off test at Quench facility 11th International QUENCH Workshop Forschungszentrum Karlsruhe (FZK), October.
ME 340 Project: Fall 2010 Heat Transfer in a Rice Cooker Brad Glenn Mason Campbell.
INSPE internship 6 month internship proposal for a Ph.D. student at WUT within the framework of WUT-I2EN Transnational Agreement Location: CEA-Cadarache.
The origin of rhyolitic spherulites at Rockhound State Park Nelia W. Dunbar Virginia T. McLemore New Mexico Bureau of Geology and Mineral Resources New.
1 Interpretation of Melt Oxidation Observations in QUENCH-09 test M.S. Veshchunov * Nuclear Safety Institute (IBRAE) Russian Academy of Sciences * Visiting.
Coupling between mass transfer and chemical reactions during the absorption of CO2 in a NaHCO3-Na2CO3 brine : experimental and theoretical study CRE XI,
Flow scheme of gas extraction from solids Chapter 3 Supercritical Fluid Extraction from Solids.
WALES, Ltd. MAY 2010 UNCLASSIFIED Interception Debris- from Initials to Full Signature- 1/16 INTERCEPTION DEBRIS – FROM INITIALS TO FULL SIGNATURE Approved.
Physical Properties of Glass 2: Thermal Expansion Coefficient
HTTF Analyses Using RELAP5-3D Paul D. Bayless RELAP5 International Users Seminar September 2010.
Investigation of "dry" recriticality of the melt during late in-vessel phase of severe accident in Light Water Reactor D.Popov, KNPP, BG O.Runevall, KTH,
Enclosure Fire Dynamics
CHE/ME 109 Heat Transfer in Electronics LECTURE 12 – MULTI- DIMENSIONAL NUMERICAL MODELS.
Session III: Computational Modelling of Solidification Processing Analytical Models of Solidification Phenomena V. Voller QUESTION: As models of solidification.
Excess Gibbs Energy Models
KIT – University of the State of Baden-Wuerttemberg and National Laboratory of the Helmholtz Association Institute for Nuclear and Energy Technologies.
ANALYSIS AND SENSITIVITY STUDIES OF EXERCISE 1 OF THE OECD/NRC BWR TT BENCHMARK 2002 ANS Winter Meeting Bedirhan Akdeniz and Kostadin Ivanov Pennsylvania.
Thorium molten salts, theory and practice Paul Madden (Oxford, UK) & Mathieu Salanne & Maximilien Levesque (UPMC, France) Euratom Project, 13 Groups Molten.
Introduction to plausible values National Research Coordinators Meeting Madrid, February 2010.
Tutorial 5: Numerical methods - buildings Q1. Identify three principal differences between a response function method and a numerical method when both.
RIC 2009 Thermal Hydraulics & Severe Accident Code Development & Application Ghani Zigh USNRC 3/12/2009.
Idaho National Engineering and Environmental Laboratory Assessment of Margin for In-Vessel Retention in Higher Power Reactors 2004 RELAP5 International.
Application of Monte Carlo Methods for Process Modeling
Subprogramme 6: Physical modelling and separate effect experiments for fuels (M4F) Marjorie Bertolus CEA, DEN, Centre de Cadarache SP6 coordinator.
KIT – University of the State of Baden-Württemberg and National Large-scale Research Center of the Helmholtz Association Institute for Nuclear and Energy.
The Influence of the Selected Factors on Transient Thermal Impedance of Semiconductor Devices Krzysztof Górecki, Janusz Zarębski Gdynia Maritime University.
Slide 1 Satellite Drag Modeling using Direct Simulation Monte Carlo (DSMC) Piyush M. Mehta and Craig A. McLaughlin The University of Kansas Acknowledgement:
Experimental study of gas-liquid mass transfer coupled with chemical reactions by digital holographic interferometry C. Wylock, S. Dehaeck, T. Cartage,
MHD Dynamo Simulation by GeoFEM Hiroaki Matsui Research Organization for Informatuion Science & Technology(RIST), JAPAN 3rd ACES Workshop May, 5, 2002.
FAST MOLTEN SALT REACTOR –TRANSMUTER FOR CLOSING NUCLEAR FUEL CYCLE ON MINOR ACTINIDES A.Dudnikov, P.Alekseev, S.Subbotin.
ERMSAR 2012, Cologne March 21 – 23, The Experimental Results of LIVE-L8B: Debris Melting Process in a Simulated PWR Lower Head X. Gaus-Liu, A. Miassoedov,
ERMSAR 2012, Cologne March 21 – 23, 2012 ESTIMATION OF THERMAL-HYDRAULIC LOADING FOR VVER-1000 UNDER SEVERE ACCIDENT SCENARIO Barun Chatterjee 1, Deb Mukhopadhyay.
Overview of the ASTEC V2.0-rev1 validation
Melt Pool Behavior and Coolability in the Lower Head of a Light Water Reactor - Progress in WP5-2 of SARNET2 Weimin Ma Division of Nuclear Power Safety.
Validation studies of CFD codes on hydrogen combustion
ERMSAR 2012, Cologne March 21 – 23, 2012 CONDUCT AND ANALYTICAL SUPPORT TO AIR INGRESS EXPERIMENT QUENCH-16 J. BIRCHLEY 1, L. FERNANDEZ MOGUEL 1, C. BALS.
ERMSAR 2012, Cologne March 21 – 23, 2012 Analysis of Corium Behavior in the Lower Plenum of the Reactor Vessel during a Severe Accident Rae-Joon Park,
CHOOSE EXPERTS, FIND PARTNERS Parametrical study on MCCI reactor cases under dry cavity conditions for assessment of parameters of importance Philippe.
ERMSAR 2012, Cologne March 21 – 23, 2012 Pretest Calculations of QUENCH-DEBRIS-0 Test Using SOCRAT/V3 Code V ASILIEV A.D. N UCLEAR S AFETY I NSTITUTE OF.
ERMSAR 2012, Cologne March 21 – 23, 2012 Main results of the ISTC Project #3876 “Thermo- Hydraulics of U-Zr-O Molten Pool under Oxidising Conditions in.
ERMSAR 2012, Cologne March 21 – 23, 2012 Experimental Determination and Analysis of Iodine Mass Transfer Coefficients from THAI Test Iod-23 K. FISCHER,
ERMSAR 2012, Cologne March 21 – 23, 2012 High temperature reaction between UO 2 and sea salt deposit M. Takano 1, T. Nishi 1, M. Kurata 1, M. Amaya 2,
ERMSAR 2012, Cologne March 21 – 23, 2012 Analysis and interpretation of the LIVE-L6 experiment A. Palagin, A. Miassoedov, X. Gaus-Liu (KIT), M. Buck (IKE),
DFT Applications Technology to calculate observables Global properties Spectroscopy DFT Solvers Functional form Functional optimization Estimation of theoretical.
ERMSAR 2012, Cologne March 21 – 23, ON THE ROLE OF VOID ON STEAM EXPLOSION LOADS.
Plans for a new large scale corium facility at CEA Cadarache: the FOURNAISE project C. Journeau, J.M. Ruggieri, P. Piluso CEA, DEN, Cadarache (FR) ERMSAR.
ERMSAR 2012, Cologne March 21 – 23, 2012 MOCKA Experiments on Concrete Erosion by a Metal and Oxide Melt J. J. FOIT, T. CRON, B. FLUHRER, A. MIASSOEDOV,
ERMSAR 2012, Cologne March 21 – 23, 2012 Experiments of the LACOMECO Project at KIT A. M IASSOEDOV 1, M. K UZNETSOV 1, M. S TEINBRÜCK 1, S. K UDRIAKOV.
ERMSAR 2012, Cologne March 21 – 23, 2012 MCCI pool temperature and viscosity: a discussion of the impact of scale A. Fargette AREVA NP GmbH, Paul-Gossen.
ERMSAR 2012, Cologne March 21 – 23, 2012 Experimental and computational studies of the coolability of heap-like and cylindrical debris beds E. Takasuo,
WCRP Extremes Workshop Sept 2010 Detecting human influence on extreme daily temperature at regional scales Photo: F. Zwiers (Long-tailed Jaeger)
ERMSAR 2012, Cologne March 21 – 23, 2012 Pascal PILUSO (CEA) Seong-Wan HONG (KAERI) Matjaz LESKOVAR (JSI) Presentation by François BOUSSARD (CEA) On behalf.
ERMSAR 2012, Cologne, Germany, March 21 – 23, 2012 Aerosol Retention in Containment Leak Paths: Indications for a Code Model in the Light of COLIMA Experimental.
Regression Analysis1. 2 INTRODUCTION TO EMPIRICAL MODELS LEAST SQUARES ESTIMATION OF THE PARAMETERS PROPERTIES OF THE LEAST SQUARES ESTIMATORS AND ESTIMATION.
ERMSAR 2012, Cologne March 21 – 23, 2012 Validation of the FCI codes against DEFOR-A data on the mass fraction of agglomerated debris Session 2, paper.
Development of a new Building Energy Model in TEB Bruno Bueno Supervisor: Grégoire Pigeon.
ERMSAR 2012, Cologne March 21 – 23, 2012 OECD Benchmark Exercise on the TMI-2 Plant: Analysis of an Alternative Severe Accident Scenario G. Bandini (ENEA),
ERMSAR 2012, Cologne March 21 – 23, 2012 GENERIC CONTAINMENT A first step towards bringing (European) containment simulations to a common level St. Kelm.
Lecture 17: Diffusion PHYS 430/603 material Laszlo Takacs UMBC Department of Physics.
ERMSAR 2012, Cologne March 21 – 23, 2012 ASTEC V2.0 rev 1 Reactor Applications French PWR 900 MWe Accident Sequences Comparison with MAAP4 V. Lombard,
ERMSAR 2012, Cologne March 21 – 23, 2012 Post-test calculations of CERES experiments using ASTEC code Lajos Tarczal 1, Gabor Lajtha 2 1 Paks Nuclear Power.
Concept of HETP, HTU and NTU
Heat Transfer Su Yongkang School of Mechanical Engineering # 1 HEAT TRANSFER CHAPTER 8 Internal flow.
A.Borovoi, S.Bogatov, V.Chudanov, V.Strizhov
Benchmark VVER1000 MCCI Reactor Test Case
Jordan University of Science and Technology
Presentation transcript:

ERMSAR 2012, Cologne March 21 – 23, 2012 A SARNET Benchmark on two VULCANO Molten Core Concrete Interaction Tests C. Journeau 1, J.F Haquet 1, B. Letexier 1, A. Greco 1, B. Spindler 2, R. Gencheva 3, P. Groudev 3, D. Dimov 4, A. Fargette 5, J. Foit 6, B. Michel 7, C. Mun 7, T. Sevon 8, C. Spengler 9, F. Polidoro 10 1 CEA, Cadarache (FR)2 CEA, Grenoble (FR) 3 INRNE, Sofia (BG)4 Energy Inst., Sofia (BG) 5 AREVA NP, Erlangen (DE)6 KIT, Karlsruhe (DE) 7 IRSN, Cadarache (FR)8 VTT, Espoo (FI) 9 GRS, Cologne (DE)10 RSE, Milan (IT)

ERMSAR 2012, Cologne March 21 – 23, 2012 Outline 1. Test presentation 2. Benchmark characteristics 3. Calculations vs. Experiment 4. Synthesis, conclusions and perspectives

ERMSAR 2012, Cologne March 21 – 23, 2012 Main Test characteristics Limestone rich concrete (VB-U6) - Silica rich concrete (VB-U5) Corium masses 31 kg (U6) – 28 kg (U5) Net power ~ 9kW (U6) kW (U5)  1 kW (Side View) TEST SECTION (Cross View)

ERMSAR 2012, Cologne March 21 – 23, 2012 Concretes Concrete F- VB-U5 Concrete G VB-U6 SiO CaO Al 2 O CO H2OH2O3.17 Fe 2 O Concrete – corium pseudobinary phase diagrams

ERMSAR 2012, Cologne March 21 – 23, 2012 Partners and codes In this benchmark nine organisations from 5 different EU countries have been involved. They simulate main MCCI phenomena in VB-U5 and VB-U6 tests using different codes as it is pointed bellow: – MEDICIS (ASTECv2) code used by IRSN, France, GRS, Germany, EI, Bulgaria and INRNE, Bulgaria; – TOLBIAC-ICB v3.2 code used by CEA-Cadarache, France and CEA-Grenoble, France; – CORQUENCH 3.03 code used by VTT, Finland; – COSACO code used by AREVA, Germany; – WECHSL code used by KIT (FZK), Germany; – CORIUM2D code used by RSE, Italy The purpose of these analyses is to compare code results with the results obtained by the tests, to compare the best-estimated assumptions and to synthesize conclusions

ERMSAR 2012, Cologne March 21 – 23, 2012 Ablation Rate VB-U6 (limestone-rich) Models consider either isotropic ablation for VB-U6 or have standard correlation for each direction 2 types of modelling: With initial transient (thermal inertia) ~constant ablation rate (TOLBIAC) Average ablation rate ~2 cm/s

ERMSAR 2012, Cologne March 21 – 23, 2012 VB-U6 Ablation shape CEA Grenoble 3 (anisotropic ablation) indeed shows a too large radial ablation. VB-U6 is indeed rather isotropic. KIT and RSE exhibit too small lateral ablation/ too large axial All the others provide a reasonably good fit.

ERMSAR 2012, Cologne March 21 – 23, 2012 VB-U5 Ablation (silica-rich) Various approaches – No coefficient to model anisotropy: Too large axial ablation – No coefficient but different h : VTT/CORQUENCH: good shape – Empirical coefficient added: leads to rather good fit of curves  Predictive nature of the empirical coefficients to be assessed

ERMSAR 2012, Cologne March 21 – 23, 2012 VB-U5 Ablated volumes Rather good fit of results Major uncertainty lies with axial/lateral ablation anisotropy

ERMSAR 2012, Cologne March 21 – 23, 2012 Corium Pool Temperatures Few measurements available (improved in recent tests) Uncertainty: <200 K RSE overestimates temperatures (linked with too, small ablation) Approaches with T interface =T solid underestimate the pool temperature by several 100s K. Models with T interface ~T liquidus provide better simulation. – TOLBIAC (CEA) – AREVA (U6), EI (U5) – TOLBIAC with macrosegregation gives too low temperature.

ERMSAR 2012, Cologne March 21 – 23, 2012 Pool composition UO2 wt% Analyses: 40-53wt% UO2 in central part of pool TOLBIAC do not model well final composition – CEA_gre: Macrosegregation: crusts enriched in UO2-ZrO2 – CEA_cad: crust at pool composition at the time of deposit Even if there are crusts, they must be remelted when ablation progresses and be at a composition close to the final melt pool composition. Exp. value

ERMSAR 2012, Cologne March 21 – 23, 2012 Synthesis 10 partners – 6 code benchmark was a key point in EU networking on MCCI. Cavity volume and shape are roughly well predicted – VB-U5 needs to take into account anisotropy, either explicitly or implicitly (CORQUENCH). – Axial ablation is generally overestimated Assuming an interface temperature around liquidus provides better estimates of the pool temperature Crusts, if they exist, shall have a composition close to the current pool composition.

ERMSAR 2012, Cologne March 21 – 23, 2012 Conclusions Up to now, it is still not possible to propose a comprehensive modelling of MCCI that could predict the observed anisotropy and all the parameters of the experiment. No single calculation has been able to compute all the parameters of the experiments. But we are using multi 0D quasi-steady state modelling to model an intermittent ablation process – complex geometry both at the interface – complex convection pattern in the pool because of combined effects of gas bubbling and solutal convection. Nevertheless, reasonably good estimates of ablation volume and profile.

ERMSAR 2012, Cologne March 21 – 23, 2012 Conclusions - Perspectives VB-U5 and VB-U6 were within the first VULCANO MCCI experiments They used typical Gen 2 plant concretes and prototypical corium Latest VULCANO tests have better measurements – Better estimation of radiated and ablated powers – Valid measurement of temperature every ~10 min Coming SARNET-VULCANO tests shall eliminate initial transient crusts (by introduction of Zr) SARNET is in parallel writing a State of the Art report.