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Journal Articles

Coolability evaluation of debris bed on core catcher in a sodium-cooled fast reactor

Matsuo, Eiji*; Sasa, Kyohei*; Koyama, Kazuya*; Yamano, Hidemasa; Kubo, Shigenobu; Hourcade, E.*; Bertrand, F.*; Marie, N.*; Bachrata, A.*; Dirat, J. F.*

Proceedings of 27th International Conference on Nuclear Engineering (ICONE-27) (Internet), 5 Pages, 2019/05

Discharged molten-fuel from the core during Core Disruptive Accident (CDA) could become solidified particle debris by fuel-coolant interaction in the lower sodium plenum, and then the debris could form a bed on a core catcher located at the bottom of the reactor vessel. Coolability evaluations for the debris bed are necessary for the design of the core catcher. The purpose of this study is to evaluate the coolability of the debris bed on the core catcher for the ASTRID design. For this purpose, as a first step, the coolability calculations of the debris beds formed both in short term and later phase have been performed by modeling only the debris bed itself. Thus, details of core catcher design and decay heat removal system are not described in this paper. In all the calculations, coolant temperature around the debris bed is a parameter. The calculation tool is the debris bed module implemented into a one-dimensional plant dynamics code, Super-COPD. The evaluations have shown that the debris beds formed both in short term and later phase are coolable by the design which secures sufficient coolant flow around the core catcher located in the cold pool.

Journal Articles

Nonmonotonic temperature dependence of thermopower in strongly correlated electron systems

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

Physical Review B, 84(15), p.153107_1 - 153107_4, 2011/10

 Times Cited Count:9 Percentile:39.59(Materials Science, Multidisciplinary)

Journal Articles

Thermoelectric response in the incoherent transport region near Mott transition; The Case study of La$$_{1-x}$$Sr$$_x$$VO$$_3$$

Uchida, Masaki*; Oishi, Koji*; Matsuo, Mari; Koshibae, Wataru*; Onose, Yoshinori*; Mori, Michiyasu; Fujioka, Jun*; Miyasaka, Shigeki*; Maekawa, Sadamichi; Tokura, Yoshinori*

Physical Review B, 83(16), p.165127_1 - 165127_5, 2011/04

 Times Cited Count:30 Percentile:74.76(Materials Science, Multidisciplinary)

Oral presentation

Magnetic field dependence of thermopower in strongly correlated electron systems

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

no journal, , 

Oral presentation

Effect of electron correlation on magnetic field dependence of thermopower

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

no journal, , 

no abstracts in English

Oral presentation

Electron correlation effect on temperature and magnetic-field dependences of thermopower

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

no journal, , 

Oral presentation

Thermopower in strongly correlated electron systems with orbital degeneracy

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

no journal, , 

no abstracts in English

Oral presentation

Study of the thermopower in the multi-orbital Hubbard model using dynamical mean-field theory

Matsuo, Mari; Okamoto, Satoshi*; Koshibae, Wataru*; Mori, Michiyasu; Maekawa, Sadamichi

no journal, , 

no abstracts in English

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