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Multi-pin ballooning during LOCA transient: A three-dimensional analysis
- Source :
- Nuclear Engineering and Design, Nuclear Engineering and Design, 2013, 256, pp.45-55. ⟨10.1016/j.nucengdes.2012.11.013⟩
- Publication Year :
- 2013
- Publisher :
- HAL CCSD, 2013.
-
Abstract
- Computational predictions concerning ballooning of multiple fuel pins during a loss of coolant accident (LOCA) with a final reflood phase are now more than ever of interest amongst the design basis accidents in pressurized water reactors (PWR). Difficulties for such studies are twofold. Firstly, modeling has to take into account many coupled phenomena as thermics (heat generation, radiation, convection and conduction), hydraulics (multi-dimensional one-to-three phase flow and shrinkage) and mechanics (thermal expansion, creep and embrittlement) but also chemistry (oxidation, hydriding, etc.). Secondly, there exists only a few experimental investigations to validate the complex coupled modeling enabling such predictions. This paper deals with the new computational 3D tool named DRACCAR which models the deformations of rods within a bundle (from one rod to a full fuel assembly) during LOCA transients including the water reflood phase. © 2012 Elsevier B.V. All rights reserved.
- Subjects :
- Convection
Nuclear and High Energy Physics
Engineering
Fuel assembly
Hydraulics
020209 energy
Mechanical engineering
02 engineering and technology
Loss of coolant accidents
01 natural sciences
7. Clean energy
Ballooning
010305 fluids & plasmas
law.invention
Hydriding
Three-dimensional analysis
law
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
General Materials Science
Multiple fuels
Phase flow
Safety, Risk, Reliability and Quality
Waste Management and Disposal
Embrittlement
[PHYS]Physics [physics]
Design basis accidents
business.industry
Mechanical Engineering
Coupled modeling
Three dimensional
Pressurized water reactors
Mechanics
Thermal conduction
Coupled phenomena
Nuclear Energy and Engineering
Creep
Heat generation
Computational predictions
Convection and conduction
Thermal expansion
business
Loss-of-coolant accident
Experimental investigations
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nuclear Engineering and Design, Nuclear Engineering and Design, 2013, 256, pp.45-55. ⟨10.1016/j.nucengdes.2012.11.013⟩
- Accession number :
- edsair.doi.dedup.....5eedf743a97ec2848abedfb4f1237f37