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Service for Fluid Modelling and Studies
• Born in 2001
D. Caruge : Head of Service ([email protected])J. Segré : Scientific Assistant ([email protected])
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SFME : 70 engineersresearchers 5 Laboratories
60 fluid mechanic researchers
+ 10 software architecture developers
12 PHD
~20 students per year
•Expertise in fluid mechanics, mainly devoted to nuclear applications•Numerical modelisation•Coupled multiphysics problems and methodologies•Software Architecture •Experimental activities•Reactor & Cycle
CEA/DEN 320052008
SFME
LEEF Laboratoire d’Etudes Expérimentales des Fluides
Chef du laboratoire Isabelle Tkatschenko 35 21Secrétaire Véronique LECHOPIED 66 99 Fax 82 29
LETR Laboratoire d’Etudes Thermiquesdes Réacteurs
Chef du laboratoire Gallo Danielle 21.61 Secrétaire MarieClaude ROLLAND 66.56 Fax 85.68
LMSC Laboratoire de Simulation des Ecoulements et Transferts
Chef du laboratoire Philippe MONTARNAL 25 75Secrétaire MarieClaude ROLLAND 66.56 Fax 52.42
LGLS Laboratoire de Génie Logiciel et de Simulation
Chef du laboratoire Vincent BERGEAUD 73.20Secrétaire Evelyne Macanda 91 10 Fax 52 42
SFMEService Fluides numériques,
Modélisation et Études
Chef du Service Daniel CARUGE 91.12Adjoint Emmanuel DORLET 91.17Assistant Scientifique Jacques SEGRE 48.00Secrétaire Évelyne MACANDA 91.10 Fax : 96.96
LTMF Laboratoire d’études des Transferts et de Mécanique des Fluides
Chef du laboratoire Alain BENGAOUER 59 36Secrétaire Véronique LECHOPIED 66 99 Fax 82.29
Fluid mechanics and thermal transfers
Software architectures
& Uncertainties
Reactor Studies
Gestion des études et des données, persistance, IHM
Géométrie Maillage
Coupleur de codes de calcul
Modèled’échange de données
Intégration PosttraitementVisualisation
LTMFLTMF
LEEFLEEFExperimental Studies
Hydogeology &Waste repository
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Fluid Dynamic Codes
Legacy codes of SFME
• CAST3M TH monophasic, multi-species, natural circulation, flows in porous media, structure analysis, R&D platform and industrial applications(IRSN, ANDRA,…)
• MOLINA Rotating flows in UCG process
• FLICA-4 TH 2 phase flow in reactor cores, industrial code (AREVA, IRSN, TechnicAtome)
• OVAP TH 3D 2-phase flow CMFD, R&D platform
• TRITON DSN code
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SCIENTIFIC SOFTWARE PLATFORMS
• Main Objectives : rationalisation, perpetuate, coupling, analysis, quantification…
• Platform for computational codes and coupling for multiphysics : SALOME
• Platform for waste repository simulation :AlliancesSHORT.ppt
• Platform Neptune, 2-Phase flow « multi-scale » thermalHydraulics
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The SALOME platform
Post
CAD InterfaceCAD modeling
Cleaning Properties
MeshingS
upervisionSolver
CADSystem
Visualization
• Platform for developing generic pre and post processing and providing an efficient environment for coupled mutiphysics and multiscale numerical simulations
OPEN SOURCE SOFTWARE within the frame of EDF CEA codevelopment and the RNTL project :SALOME
http://www.salomeplatform.org
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Objectives
• improving interoperability between CAD modelling and calculation codes
• allowing chaining and coupling between calculation codes, in heterogeneous environments
• providing a generic, efficient and userfriendly interface, contributing to reducing of costs and delays for studies
• enhancing code or portion of codes reusing (component approach)
• sharing developments of non critical (pre and postprocessors) functions within the frame of numerical simulation
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THE ALLIANCES PROJECT• Simulation Platform for Nuclear Waste Repository for CEA & Andra :
– Performance & Safety Studies – R&D in modeling and numerics– Capitalisation of knowledge
• Integration of the best codes for the following simulations:
– Hydraulics saturated & unsaturated zone, RN migration– Coupling Transport Geochemistry– Operational Model– Aeraulics, Thermalmechanics, Thermalhydraulics
• Sharing the means :
– Shared developement CEAAndra– Mixed team
Transport use case with anisotropic factor of 104
MHFE (left), new VF (right), Non convergence avec VF MPFA
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New multiscale 2Phase flow platform
System
3D local
DNS
3D porous
Co-developped byCEA (SAC-GRE-CAD)-EDF AREVA-IRSN
Integrating existing codes+ R&D for new models+ smart experiments
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Radial cut
Fuel element
Experimental : research reactor RJH Targeted fast neutron flux in the core
• requires to minimize moderator mass (light water)• Induces a very high specific power
In the ThermalHydraulic point of view, this means :
• Thin channels (to increase heat exchange surface)• Very high flow rates • Very high heat fluxes
The present design provides the following bc:
• Channel clearance: < 2 mm• Flow velocity: around 15m/s• Thermal heat flux: up to 5.3 MW/m²
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Gas : Helium
Mass flow : 1 g/s
injection Duration : 1800 s
Temperature injection : Tamb
Total injected Mass : 1.8 kg
H2 leakages studies in a closed media
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OVAP: R&D platform• Object Oriented Design
•System of equations :– 3 equations (HEM) model – 4 equations (HRM) model (FLICA4 model)– twofluid model (6 eqs)
• transport equations about interfacial area concentration
• MUSIG model– general multifield model – turbulent flow modeling capabilities
• mixing length model (Buleev model) suited for plane channel calculations
• kL
• kepsilon (standard or lowReynolds number model)•Closures (local & porous scale)
•VF numerical methods