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Comparison of Numerical Analysis Methods of APro for the Total System Performance Assessment of a Geological Disposal System

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영문명
발행기관
한국방사성폐기물학회
저자명
Hyun Ho Cho Hong Jang Dong Hyuk Lee Jung-Woo Kim
간행물 정보
『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.21 No.1, 165~173쪽, 전체 9쪽
주제분류
공학 > 공학일반
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발행일자
2023.03.30
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국문 초록

Various linear system solvers with multi-physics analysis schemes are compared focusing on the near-field region considering thermal-hydraulic-chemical (THC) coupled multi-physics phenomena. APro, developed at KAERI for total system performance assessment (TSPA), performs a finite element analysis with COMSOL, for which the various combinations of linear system solvers and multi-physics analysis schemes should to be compared. The KBS-3 type disposal system proposed by Sweden is set as the target system and the near-field region, which accounts for most of the computational burden is considered. For comparison of numerical analysis methods, the computing time and memory requirement are the main concerns and thus the simulation time is set up to one year. With a single deposition hole problem, PARDISO and GMRESSSOR are selected as representative direct and iterative solvers respectively. The performance of representative linear system solvers is then examined through a problem with an increasing number of deposition holes and the GMRES-SSOR solver with a segregated scheme shows the best performance with respect to the computing time and memory requirement. The results of the comparative analysis are expected to provide a good guideline to choose better numerical analysis methods for TSPA.

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APA

Hyun Ho Cho,Hong Jang,Dong Hyuk Lee,Jung-Woo Kim. (2023).Comparison of Numerical Analysis Methods of APro for the Total System Performance Assessment of a Geological Disposal System. Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT), 21 (1), 165-173

MLA

Hyun Ho Cho,Hong Jang,Dong Hyuk Lee,Jung-Woo Kim. "Comparison of Numerical Analysis Methods of APro for the Total System Performance Assessment of a Geological Disposal System." Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT), 21.1(2023): 165-173

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