Search results for "Ceramic breeder"

showing 3 items of 3 documents

Status of ceramic breeder pebble bed thermo-mechanics R&D and impact on breeder material mechanical strength

2012

Abstract Among the international fusion solid breeder blanket community, there exists steady progress on the experimental, phenomenological, and numerical characterizations of the pebble bed effective thermo physical and mechanical properties, and of thermomechanic state of the bed under prototypical operating conditions. This paper summarizes recent achievements in pebble bed thermomechanics that were carried out by members of the IEA Fusion Nuclear Technology Subtask I Solid Breeding Blanket. A major goal is on developing predictive capability while identifying a pre-conditioned equilibrium stress state that would warrant pebble bed integrity during operations. The paper reviews and synth…

Computer scienceMechanical EngineeringNuclear engineeringPredictive capabilityBlanketCeramic breeder Pebble bed Thermomechanics Phenomenological models Solid breeder blanket designBreeder (animal)Nuclear Energy and Engineeringvisual_artBenchmark (surveying)Mechanical strengthvisual_art.visual_art_mediumGeneral Materials ScienceCeramicPebbleSettore ING-IND/19 - Impianti NucleariCivil and Structural Engineering
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A constitutive model for the thermo-mechanical behaviour of fusion-relevant pebble beds and its application to the simulation of HELICA mock-up exper…

2007

Abstract Within the framework of the R&D activities promoted by EFDA on the Helium-Cooled Pebble Bed Test Blanket Module to be irradiated in ITER, attention has been focused on the modelling of the thermo-mechanical behaviour of both beryllium and lithiated ceramic pebble beds that are envisaged to be used respectively as neutron multiplier and tritium breeder. This behaviour depends, mainly, on the reactor-relevant conditions, the pebble sizes and the breeder cell geometries and a general constitutive model has not yet been validated, especially for fusion-relevant applications. ENEA-Brasimone and the Department of Nuclear Engineering (DIN) of the University of Palermo have performed inten…

HCPB–TBMFusionMaterials scienceLithiated ceramic breederPebble-bed reactorMechanical EngineeringNuclear engineeringConstitutive equationThermo-mechanical constitutive modelBlanketFusion powerNuclear Energy and EngineeringMockupPebble bedGeneral Materials SciencePebbleThermo mechanicalSettore ING-IND/19 - Impianti NucleariCivil and Structural Engineering
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Experimental tests on Li-ceramic breeders for the helium cooled pebble bed (HCPB) blanket design

2003

The Helium Cooled Pebble Bed (HCPB) Test Blanket Module (TBM) to be tested in ITER (International Thermonuclear Experimental Reactor) Reactor foresees the utilization of Lithiate ceramics as Tritium breeder in form of pebble beds. Since 1998, ENEA has launched many experimental activities for the evaluation of the breeder thermomechanics and the interaction between the pebble beds and the prismatic steel containment walls. Main objectives of these activities are the measurement of the pebble bed effective thermal conductivity, the wall heat transfer coefficient, the pressure loads and deformations on the lateral walls and their dependency from the mechanical constraints. The paper presents …

Thermonuclear fusionMaterials scienceTokamakHCPBMechanical EngineeringNuclear engineeringHeat transfer coefficientBlanketFusion powerlaw.inventionNuclear physicsBreeder (animal)Li-ceramic breederNuclear Energy and EngineeringlawExperimental testHeat transferGeneral Materials SciencePebbleSettore ING-IND/19 - Impianti NucleariCivil and Structural EngineeringFusion Engineering and Design
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