期刊
FUSION ENGINEERING AND DESIGN
卷 122, 期 -, 页码 47-51出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2017.09.009
关键词
Blanket; Helium pressure drop; Porous media; Randomly packed spheres
资金
- International Thermonuclear Experimental Reactor Special Fund of China [2014GB114000]
Pebble beds are used in many tritium breeder designs of fusion blanket, which is purged by a flow of low velocity helium. In this paper, experimental study of the pressure drop of helium through packed sphere beds was carried out. The pebbled beds were sealed in a rectangular container. The spheres of five different diameters varied from 0.5 mm to 2.0 mm. The Darcy regime and Forchheimer regime were identified within the range 2.47 < Re < 27.59. The transition region was identified and discussed in detail. The pressure drop was characterized by Kozeny-Carman constants or Ergun's constants for the experimental range. Some commonly used correlations were evaluated by the experimental data.
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