Multi-physics process. Accidents Real time forecasting
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1 Nuclear Applications modelling of Multi-physics process Environmental Impact Accidents Real time forecasting Sharad Tripathi, June 7,2011
2 FLUIDYN, 25 years of international presence Development centers Technical centers Agents
3 FLUIDYN, focus on Energy & Environment CFD Some references Nuclear: Areva, CEA, EdF, Algade, ITER Organisation, IPR, NPCIL, BARC, British Nuclear, Westlake Scientific, Equipement manufacturers, IGCAR, DCNS, Petrochemical: Total, BP, EXXON, Shell, Bureau Veritas, SAIPEM, Technip, Jacobs, ERM, Mitsubishi, Sumitomo, Schlumberger, GdF, Reliance, Process: AIR LIQUIDE, ALCAN, ANDRA, Sanofi--Aventis, EADS, EUROVIA, GENERALE DES EAUX, SAINT-GOBAIN, SNCF, SNECMA, SOLVAY, etc..
4 Flow: Incompressible to explosions Software fluidyn MP-NS Turbulent Flow (RANS) Mixing flow Thermal convection Leak/ Explosion Unstable flow (LES)
5 Heat transfer & thermal stresses Software fluidyn MP-CHT Gas turbine flame holder deformations Cooling sheet metal with air jets Plate heat exchanger Metallic sponge heat exchanger (Local Non-Equilibrium Thermal)
6 Fluid Structure Interaction (coupled) Flow+Acoustics+ Structural vibrations Software fluidyn MP-FSI Tank burst & over topping of walls RPV Explosion, Cracks, leaks Vortex Induced Vibrations
7 RPV H2 accumulation & Recombination Process data (experimental) Inlet Boundary conditions Fluid Structure THAI Vessel Apparatus Mesh
8 Comparison with Experiments Steam Liquid Water Turbulence models check: Hydrogen distribution Temperature
9 Comparison with Experiments Traceplot 1 After 4200sec Traceplot 2 Traceplot4 Traceplot3
10 Vacuum pumps, Magneto-Hydro Dynamics Pump turbo-molecular ITER DSMC Code fluidyn-cae Coupling of methods/models fluidyn-mp Rarefied gas M A N I F O L Crack Surface liquid V A C U U M Analytic models of evaporation Surface vapor Domain DSMC
11 Nuclear Field examples Water leak in Vacuum (DSMC+ NS Flow) ITER International Liquid metal flow in intense magnetic fields ITER India Crack & leak in RPV: NUPEC Japan Vortex Induced Vibrations (filters, sensors, fuel elements):jnc,mitsubishi,areva, Heat generation & transfer in disposal facilities: CEA, France Hydrogen accumulation& Steam condensation in RPV: NPCIL, India Centrifugal Isotope separation in vaccum DSMC: CEA, France H 2 accumulation & Explosion in a building ILL Grenoble, France Sodium water reaction or Mg & UH3 solid state oxidation CEA, France Uranium Mine Ventilation Algade France, Barc India Radon accumulation in open cast mines Algade France Coupled Acoustic, flow & heat transfer AREVA France, IGCAR Soil desaturation in nuclear deep waste storage ANDRA, France Dynamic Analysis of a Reactor Core Shroud BARC, India Liquid Metal flow with Proton Beam Heating BARC Plug rupture in a tank containing liquid under high pressure JNC
12 Environment & Risk Software Atmospheric Pollution fluidyn PANACHE Risk assessment fluidyn-panepr fluidyn-panfire fluidyn-panwave Internal Pollution fluidyn VENTIL Ventilation: fluidyn-ventclim Explosion: fluidyn-ventex Air Quality fluidyn-paneia fluidyn-panair Mines: fluidyn-ventmine Water Pollution fluidyn-flowsol Noise propagation fluidyn db
13 Atmospheric Impact Radionuclides Power station of Bugey Wind tunnel validation Domaine Dimension: Length: 3800 m Width : 770 m Height : 260 m
14 Tracer contours after 40
15 Wind Tunnel Comparison Concentr ration (ppm) Distance (m) Exp. 1150m Exp. 1750m Exp. 2500m Modèle 1150m Modèle 1750m Modèle 2500m
16 Wind tunnel Comparisons Profils de concentrations verticaux dans l axe central du domaine à 40min de simulation Concentration n (ppm) Exp. 1150m Exp. 1750m Exp. 2500m Modèle 1150m Modèle 1750m Modèle 2500m Altitude (m)
17 Real time Impact Prediction Platform Schematic Diagram Real time impact contours Sensor network External Weather forecast Probable chronic emission Accidental Emission Impact Forecast every 3h for next 48h Operational update for Maintenance, Mitigation, Cleanup etc
18 Release of a Pressure Built-up Emission after release lasts 60 days- various wind conditions
19 Model, Embedded Mesh & Source Source P1 P2 Species I131 CS137 Height 100 m 10m Emission T C 25 C Exit velocity 5 m/s 5 m/s
20 Air Flow & Turbulence for windrose
21 Real time Operations Chronic emission data 30 Sensor network Monitored impact Realtime function Pollution impact evaluation - 1/2h Intranet Weather data update- 30 Background concentrations Validation Automatic computation 1/2 h simulated in 1/2 h Transient impact simulation Emission rate depending on wind speed Major innovation: Sources remapping Internet website
22 I-131 & Cs-137 impact
23 Dose integration for a child/adult Similar Real time prediction visible on Paris sewage website:
24 FLUIDYN -7 boulevard de la Libération Saint-Denis, France Tel : Ring Rd, HSR Layout, Bangalore, India Tel: contact@fluidyn.com
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