Thermal Discrete Element Analysis of EU Solid Breeder Blanket Subjected to Neutron Irradiation

  title={Thermal Discrete Element Analysis of EU Solid Breeder Blanket Subjected to Neutron Irradiation},
  author={Yixiang Gan and Francisco A. Hern{\'a}ndez and Dorian A. H. Hanaor and Ratna Kumar Annabattula and Marc Kamlah and Pavel Pereslavtsev},
  journal={Fusion Science and Technology},
  pages={83 - 90}
Abstract Due to neutron irradiation, solid breeder blankets are subjected to complex thermo-mechanical conditions. Within one breeder unit, the ceramic breeder bed is composed of spherical-shaped lithium orthosilicate pebbles, and as a type of granular material, it exhibits strong coupling between temperature and stress fields. In this paper, we study these thermo-mechanical problems by developing a thermal discrete element method (Thermal-DEM). This proposed simulation tool models each… 
Discrete Element Analysis of Heat Transfer in the Breeder Beds of the European Solid Breeder Blanket Concept
Abstract In this work, an in-house thermal–Discrete Element Method (DEM) code, recently developed at Karlsruhe Institute of Technology to evaluate the heat transfer in ceramic packed pebble beds, was
Effective Thermal Conductivity of Submicron Powders: A Numerical Study
Effective thermal conductivity is an important property of granular materials in engineering applications and industrial processes, including the blending and mixing of powders, sintering of ceramics
Discrete element method for effective thermal conductivity of packed pebbles accounting for the Smoluchowski effect
In this paper, a Discrete Element Method (DEM) for the evaluation of the effective thermal conductivity of pebble beds in fusion blankets is presented. Pebble beds are multiphase materials in which
Cyclic thermo-mechanical performance of granular beds: Effect of elastoplasticity
Study on the Thermally-Induced Stress and Relaxation of Ceramic Breeder Pebble Beds
Abstract Ceramic breeder pebble beds undergo complex thermally-induced stress build-up and relaxation processes during reactor operations due to the pebble bed thermal expansion and creep
Modeling and validation of heat transfer in packed bed with internal heat generation
Several researchers have modeled the heat transfer in a packed bed, heated externally, and determined its effective thermal conductivity ( keff ). But till date, very few researchers have studied the


Effective Thermal Conductivity of Lithium Ceramic Pebble Beds for Fusion Blankets: A Review
Abstract The use of lithium ceramic pebble beds has been considered in many blanket designs for the fusion reactors. Lithium ceramics have received a significant interest as tritium breeders for the