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Friday morning session: Modeling and experiments of pebble bed thermomechanics and properties

Friday morning session: Modeling and experiments of pebble bed thermomechanics and properties. Ahn (NFRI, KO) Laser flash method for effective thermal diffusivity measurement of pebble bed Application of laser flash method to characterize pebble beds thermal properties

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Friday morning session: Modeling and experiments of pebble bed thermomechanics and properties

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  1. Friday morning session: Modeling and experiments of pebble bed thermomechanics and properties • Ahn (NFRI, KO) • Laser flash method for effective thermal diffusivity measurement of pebble bed • Application of laser flash method to characterize pebble beds thermal properties • Laser flash method cover wide range of thermal conductivity • Challenging experimental apparatus set up to meet the geometrical requirements of pebble beds. • Exploitation of laser flash apparatus for ceramic breeder on going based on the results on graphite • Results and development of the experiment to be monitored! • Orlandi (Pisa, IT) • Thermal conductivity of ceramic pebble beds used as breeder in fusion nuclear reactors • Challenging experimental set up • Interesting benchmark with FE analyses • Future development of the experiment to be monitored!

  2. Friday morning session: Modeling and experiments of pebble bed thermomechanics and properties • Annabatula (KIT, D) • Crushing analyses of pebbles in pebble beds • Recent development of advanced modeling of pebble beds • Cubic cell with 5000 pebbles with the same size: study of the damage • Challenging future perspectives: polidispersed bed, crush of pebbles in the model • Future development and implementation of the results in the design process to be followed by close. • Van Til (NRG, N) • Overview of the pebble bed assemblies irradiation experiments • Exhaustive overview of the PBA experiments from the design of the PBA, the irradiation campaign and the results of the PIE. • Extremely useful for the community: same next time for HICU? • Van Lew(UCLA, US), Annabatula (KIT, D) • Discussion on current status and outlook of thermo mechanical research and development for blaket beds • Key question to the community about the role of the modeling in the design process, the needs in terms of physical properties • Answer of different experts should be collected, documented and given as input for the next CBBI.

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