Transcript Nuclear Energy Division Nuclear Technology Department (DTN

INSPE internship
6 month internship proposal for a Ph.D. student
at WUT within the framework of WUT-I2EN
Transnational Agreement
• Location: CEA-Cadarache
• Internship duration: 2x3 months
• Coaching:
Romain le-Tellier, [email protected] and Laurent Saas [email protected]
• Severe Accident Laboratory – Light Water Reactors and Sodium Fast
Reactors Technology
Nuclear Energy Division
Nuclear Technology Department (DTN)
Transfers & Severe Accidents Measurements & Modelling Section (SMTA)
Severe Accidents Physics & Modelling Laboratory (LPMA)
•
Thermalhydraulic modelling of a steel metal layer on top of a corium pool in a
PWR under severe accident conditions
 This project will consist in performing detailed numerical calculations and analyses associated to
these two phenomena (for example, using CFD for the first point) in order to help improving the
associated 0D models developed in the PROCOR platform.
 Extension of the model of the fusion propagation in the metallic layer of the molten corium pool.
Preparation of the different cases for the LWR applications – configuration of the molten pool (liquid
+ solid, liquid only, solid only initial states), definition of the transient event managers for the initial
states (ex. Liquid only to solid + liquid), establishment of the boundary conditions for the metallic
layer (water cooled, radiative, etc.)
 Development of the model in the Java programming language.
•
Coaching: [email protected]
Nuclear Energy Division
Nuclear Technology Department (DTN)
Transfers & Severe Accidents Measurements & Modelling Section (SMTA)
Severe Accidents Physics & Modelling Laboratory (LPMA)
•
Simplified thermo-mechanical modelling of the core support plate in a PWR
under severe accident conditions
 The goal of the project is to develop a simplified model coupling thermal and mechanical models in
the PROCOR framework. Then the thermal and mechanical stabilization of the corium pool above the
core support plate will be studied for different scenarios using this simplified model. One of the
perspectives of this modelling approach may be an extension to the vessel failure modelling taking
into account the pressure in the vessel.
 Development of the model estimating the time of the lower core support plate failure due to the
interaction and stress induced by the molten corium pool. Build of the model on the basis of the
Larson Miller Parameter evaluation and integration of the model with the existing environment of
the PROCOR platform in the Java language.
 Studies of the uncertainties associated to the core support plate model with the use of the URANIE
software based on the root language.
•
Coaching: [email protected]
Nuclear Energy Division
Nuclear Technology Department (DTN)
Transfers & Severe Accidents Measurements & Modelling Section (SMTA)
Severe Accidents Physics & Modelling Laboratory (LPMA)
• Short administrative procedure in CEA – PC account, mail account, CEA
pass,
• Software installation – PROCOR, URANIE, TOLBIAC
• Lecture of scientific articles associated with phenomena needed for
subject
• PROCOR platform (PROpagationCORe) written in Java
• New environment - First steps in Java – object oriented programming
• Linux for all software but Remote Desktop of Windows available
• Preparation scheme of work, recognizing the exsisting models in platform,
developing new simplified models, comparing obtained results
• Scilab -software for numerical computation and plotting
• First step in Statistical analysis using URANIE platform. Obtained results
can be analised by TreeViewer.
Nuclear Energy Division
Nuclear Technology Department (DTN)
Transfers & Severe Accidents Measurements & Modelling Section (SMTA)
Severe Accidents Physics & Modelling Laboratory (LPMA)
• General impressions:
– Very good coaching from CEA experts
– Many things to study and good possibility to gain
the knowledge in code developing
– Good organization of time in Laboratory
– Nice atmosphere in Centre
– CEA Cadarache neighborhood – average high living
costs