Sedimentation behavior of mixed solid particles

Md Abdur Rob Sheikh, Eikaku Son, Motoki Kamiyama, Tohru Morioka, Tatsuya Matsumoto, Koji Morita, Kenichi Matsuba, Kenji Kamiyama, Tohru Suzuki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

During the material relocation phase of core-disruptive accidents in sodium-cooled fast reactors, the sedimentation behavior of fragmented debris discharged from the reactor core into the lower plenum region leading to a debris-bed formation is crucial in regard to in-vessel retention and safety concerns. The height of the beds formed may influence both the cooling of the bed from the decay heat in the fuel and the neutronic characteristics. To develop an experimental database of bed formation behavior, a series of experiments using simulant materials, namely, Al2O3, ZrO2, and stainless steel, were performed under gravity-driven discharge of solid particles from a nozzle into a quiescent cylindrical water pool. The bed height was measured for particles of different size, density, and sphericity, and an injection nozzle with varying diameter, injection velocity, and injection height. From these experiments, an empirical correlation was established to predict the bed height for both homogeneous and mixed particles for the different properties. This correlation reproduces reasonably well the experimental trend in bed height with critical factors, which were identified in this and previous experiments.

Original languageEnglish
Pages (from-to)623-633
Number of pages11
Journaljournal of nuclear science and technology
Volume55
Issue number6
DOIs
Publication statusPublished - Jun 3 2018

Fingerprint

Sedimentation
beds
Debris
Nozzles
Core disruptive accidents
Relocation
Reactor cores
Fast reactors
Experiments
steels
injection
debris
Gravitation
nozzles
Stainless steel
Sodium
Cooling
reactor cores
relocation
accidents

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Sedimentation behavior of mixed solid particles. / Sheikh, Md Abdur Rob; Son, Eikaku; Kamiyama, Motoki; Morioka, Tohru; Matsumoto, Tatsuya; Morita, Koji; Matsuba, Kenichi; Kamiyama, Kenji; Suzuki, Tohru.

In: journal of nuclear science and technology, Vol. 55, No. 6, 03.06.2018, p. 623-633.

Research output: Contribution to journalArticle

Sheikh, MAR, Son, E, Kamiyama, M, Morioka, T, Matsumoto, T, Morita, K, Matsuba, K, Kamiyama, K & Suzuki, T 2018, 'Sedimentation behavior of mixed solid particles', journal of nuclear science and technology, vol. 55, no. 6, pp. 623-633. https://doi.org/10.1080/00223131.2017.1419888
Sheikh, Md Abdur Rob ; Son, Eikaku ; Kamiyama, Motoki ; Morioka, Tohru ; Matsumoto, Tatsuya ; Morita, Koji ; Matsuba, Kenichi ; Kamiyama, Kenji ; Suzuki, Tohru. / Sedimentation behavior of mixed solid particles. In: journal of nuclear science and technology. 2018 ; Vol. 55, No. 6. pp. 623-633.
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AU - Matsuba, Kenichi

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