multi-physics process environmental impact accidents’ real ... · multi-physics process...
TRANSCRIPT
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Nuclear Applications modelling of
Multi-physics process
Environmental Impact Environmental Impact
Accidents’ Real time forecasting
Sharad Tripathi, June 7,2011
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FLUIDYN, 25 years of international presence
Development centersDevelopment centers
Technical centersTechnical centers
AgentsAgents
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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,
FLUIDYN, focus on Energy & Environment CFD
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..
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Flow: Incompressible to explosions
Turbulent Flow (RANS)
Mixing flow
Software
flu idynfluidynfluidynfluidyn MP-NS
Leak/ Explosion
Unstable flow (LES)
Thermal convection
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Cooling sheet metal with air jets
Heat transfer & thermal stresses
Software
flu idynfluidynfluidynfluidyn MP-CHT Gas turbine flameholder deformations
Plate heat exchanger Metallic sponge heat exchanger(Local Non-Equilibrium Thermal)
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Fluid Structure Interaction (coupled)
Flow+Acoustics+ Structural vibrations
Tank burst & over topping of walls
Software
flu idynfluidynfluidynfluidyn MP-FSI
RPV Explosion, Cracks, leaks
Vortex Induced Vibrations
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RPV H2 accumulation & Recombination
Inlet
Process data (experimental)
Boundary conditions
THAI Vessel Apparatus Mesh
FluidStructure
Boundary conditions
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Steam Liquid
Water
Comparison with Experiments
Water
Hydrogen distribution Temperature
Turbulence models check:
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Traceplot1
Traceplot2
After 4200sec
Comparison with Experiments
Traceplot3
1
Traceplot4
After 4200sec
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Vacuum pumps, Magneto-Hydro Dynamics
DSMC Code
ITERPump turbo-molecular
flu idyn-CAE
flu idyn-MP Rarefied gas
Coupling of methods/models M
A
N
I
F
O
L
V
A
C
U
U
M1 2 3
Crack
Analytic models of evaporation Domain DSMC
Surface vapor
Surface liquid
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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
H2 accumulation & Explosion in a building ILL Grenoble, FranceH2 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
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Environment & Risk Software
Atmospheric Pollution
flu idyn PANACHEInternal Pollution
flu idyn VENTIL
flu idyn-PANEPR
Ventilation: flu idyn-VENTCLIM
Explosion: flu idyn-VENTEXflu idyn-PANWAVE
flu idyn-PANFIRE
Risk assessment
flu idyn-PANEIAMines: flu idyn-VENTMINE
flu idyn-FLOWSOL
Water Pollution
flu idyn dBNoise propagation
flu idyn-PANAIR
Air Quality
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Atmospheric Impact Radionuclides
Power station of Bugey
Wind tunnel validation
Domaine Dimension:Domaine Dimension:
LengthLength: 3800 m : 3800 m LengthLength: 3800 m : 3800 m
WidthWidth : 770 m: 770 m
HeightHeight : 260 m : 260 m
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Tracer contours after 40’
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Wind Tunnel Comparison
25
30
35
40
45
50
Con
cent
ratio
n (p
pm)
Exp. 1150mExp. 1750mExp. 2500mModèle 1150m
0
5
10
15
20
-400 -200 0 200 400
Distance (m)
Con
cent
ratio
n (p
pm)
Modèle 1150mModèle 1750mModèle 2500m
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Wind tunnel Comparisons
Profils de concentrations verticaux dans l’axe central du domaine à 40min de simulation
25
30
35
40
45
50C
once
ntra
tion
(ppm
) Exp. 1150m
Exp. 1750m
-5
0
5
10
15
20
25
0 50 100 150 200 250 300 350 400
Altitude (m)
Con
cent
ratio
n (p
pm)
Exp. 2500m
Modèle 1150m
Modèle 1750m
Modèle 2500m
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Real time Impact Prediction Platform
Schematic Diagram
Sensor
network
External
Real time impact contours
Weather
forecast
Probable chronic emission
Accidental Emission
Impact Forecast
every 3h for next 48h
Operational
update for
Maintenance,
Mitigation,
Cleanup…etc
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Release of a Pressure Built-up
Emission after release lasts 60 days- various wind conditions
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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
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Air Flow & Turbulence for windrose
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Real time Operations
Validation
Real-time function
IntranetChronic emission data 30’
Pollution impact evaluation - 1/2h
Sensor network Monitored impact
Background concentrations
Validation
Internet website
Weather data update- 30’
� Automatic computation� 1/2 h simulated in 1/2 h� Transient impact simulation� Emission rate depending on wind speed���� Major innovation: Sources remapping
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I-131 & Cs-137 impact
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Dose integration for a child/adult
http://www.siaap.fr/tableau-de-bord-sypros
Similar Real time prediction visible on Paris sewage website:
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