Numerical simulation of three-phase flows with rich solid particles by coupling multi-fluid model with discrete element method

Liancheng Guo, Koji Morita, Yoshiharu Tobita

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

4 被引用数 (Scopus)

抄録

The postulated core disruptive accidents (CDAs) are regarded as particular difficulties in the safety analysis of liquid-metal fast reactors (LMFRs). in CDAs, the motions and interactions of solid particles, such as refrozen fuels, disrupted pellets, etc., not only dominate fundamental behaviors of multiphase flows, but also drastically influence the process of CDAs. The fast reactor safety analysis code, SiMMER-iii, which is a 2D, multi-velocity-field, multiphase, multicomponent, Eulerian, fluid dynamics code coupled with a fuel-pin model and a space- and energy-dependent neutron kinetics model, was successfully applied to a series of CDA assessments. However, strong interactions among solid particles as well as particle characteristics in multiphase flows with rich solid particles were not taken into consideration for fluid-dynamics models of SiMMER-iii. in this article, a hybrid method for multiphase flows analysis is developed by coupling the discrete element method (DEM) with the multi-fluid model of SiMMER-iii. in the coupling algorithm, motions of liquid and gas phases are solved by a time-factorization (time-splitting) method. For the solid phases, contacts among particles and interactions with fluid phases are considered through DEM. Numerical simulations of dam-break behavior with rich solid particles show reasonable agreements with corresponding experimental results. it is expected that SiMMER-iii coupled with DEM could provide a promising and useful computational tool for complicated multiphase-flow phenomena with high concentration of solid particles.

本文言語英語
ホスト出版物のタイトル2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference, ICONE 2012-POWER 2012
出版社American Society of Mechanical Engineers (ASME)
ページ371-382
ページ数12
1
ISBN(印刷版)9780791844984
DOI
出版ステータス出版済み - 1 1 2012
イベント2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference, ICONE 2012-POWER 2012 - Anaheim, CA, 米国
継続期間: 7 30 20128 3 2012

出版物シリーズ

名前International Conference on Nuclear Engineering, Proceedings, ICONE
番号1
4

その他

その他2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference, ICONE 2012-POWER 2012
Country米国
CityAnaheim, CA
Period7/30/128/3/12

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

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