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Numerical Analysis for Thermal and Mechanical Properties of Pebble Bed

Shinji Ebara, Yasutaka Harai, Takehiko Yokomine, Akihiko Shimizu

Fusion Science and Technology / Volume 56 / Number 1 / Pages 148-152

July 2009

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In solid breeder blanket design of fusion power plants, the ceramic breeder pebble bed plays a very important role. Its mechanical and thermal properties are necessary to design the blanket. In this study, thermomechancal properties of the bed such as effective thermal conductivity and stress-strain relation are investigated by means of numerical simulation. A discrete element manner is adopted in the simulation in order to clarify the influence of the individual particle properties upon the bulk behavior. As a result, the thermo-mechanical properties of pebble bed were well re-created in a computational space by means of the numerical model used in this study.

 
 
 
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