Service for Fluid Modelling and Studies Born in 2001

Transcription

1 Service for Fluid Modelling and Studies Born in 2001 D. Caruge : Head of Service (daniel.caruge@cea.fr) J. Segré : Scientific Assistant (jacques.segre@cea.fr) 11

2 SFME : 70 engineers researchers 5 Laboratories 60 fluid mechanic researchers + 10 software architecture developers 12 PH D ~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 22

3 SFME Reactor Studies Service Fluides numériques, Modélisation et Études SFME Chef du Service Daniel CARUGE Adjoint Emmanuel DORLET Assistant Scientifique Jacques SEGRE Secrétaire Évelyne MACANDA Fax : Hydogeology &Waste repository Laboratoire d Etudes Thermiques des Réacteurs LETR Chef du laboratoire Gallo Danielle Secrétaire Marie Claude ROLLAND Fax Laboratoire d Etudes Expérimentales des Fluides LEEF Chef du laboratoire Isabelle Tkatschenko Secrétaire Véronique LECHOPIED Fax Laboratoire de Simulation des Ecoulements et Transferts LMSC LTMF Chef du laboratoire Philippe MONTARNAL Secrétaire Marie Claude ROLLAND Laboratoire d études des Transfert s et de Mécanique des Fluides LTMF LEEF Alain BENGAOUER Chef du laboratoire Secrétaire Véronique LECHOPIED Fax Vincent BERGEAUD Secrétaire Evelyne Macanda Géométrie Laboratoire de Génie Logiciel et de Simulation LGLS Chef du laboratoire Experimental Studies Fax Maillage Modèle d échange de données Fluid mechanics and thermal transfers Fax Intégration Coupleur de codes de calcul Post traitement Visualisation Software architectures & Uncertainties Gestion des études et des données, persistance, IHM

4 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 44

5 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 55

6 The SALOME platform Platform for developing generic pre and post processing and providing an efficient environment for coupled mutiphysics and multiscale numerical simulations CAD Interface CAD modeling Cleaning Properties Visualization Supervision CAD System Meshing Solver Post OPEN SOURCE SOFTWARE within the frame of EDF CEA co development and the RNTL project :SALOME platform.org 66

7 Objectives improving inter operability between CAD modelling and calculation codes allowing chaining and coupling between calculation codes, in heterogeneous environments providing a generic, efficient and user friendly interface, contributing to reducing of costs and delays for studies enhancing code or portion of codes re using (component approach) sharing developments of non critical (pre and post processors) functions within the frame of numerical simulation 77

8 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 CEA Andra Mixed team Transport use case with anisotropic factor of 104 MHFE (left), new VF (right), Non convergence avec VF MPFA 88

9 New multiscale 2 Phase flow platform System 3D porous 3D local DNS Integrating existing codes + R&D for new models + smart experiments Co-developped by CEA (SAC-GRE-CAD)-EDF AREVA-IRSN 99

10 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 Thermal Hydraulic point of view, this means : Thin channels (to increase heat exchange surface) Very high flow rates Radial cut 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 Fuel element 1010

11 H2 leakages studies in a closed media Gas : Helium Mass flow : 1 g/s injection Duration : 1800 s Temperature injection : Tamb Total injected Mass : 1.8 kg 1111

12 OVAP: R&D platform Object Oriented Design System of equations : 3 equations (HEM) model 4 equations (HRM) model (FLICA 4 model) two fluid model (6 eqs) transport equations about interfacial area concentration MUSIG model general multi field model turbulent flow modeling capabilities mixing length model (Buleev model) suited for plane channel calculations k L k epsilon (standard or low Reynolds number model) Closures (local & porous scale) VF numerical methods 1212