Mesh Stability Study for the Performance Assessment of a Deep Geological Repository Using APro
(주)코리아스칼라
- 최초 등록일
- 2023.07.31
- 최종 저작일
- 2023.06
- 12페이지/ 어도비 PDF
- 가격 4,300원
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국방사성폐기물학회
ㆍ수록지정보 : 방사성폐기물학회지 / 21권 / 2호
ㆍ저자명 : Hyun Ho Cho, Hong Jang, Dong Hyuk Lee, Jung-Woo Kim
목차
1. Introduction
2. Modeling Specification for the MeshStability Study
3. Results and Discussion
3.1 Results of Mesh Stability Studies for DisposalTunnel and Near-Field Rock Regions
3.2 Enhancement of Accuracy EmployingAdaptive Mesh Refinement
3.3 Comparison of Computational EfficiencyWith Fixed Time Intervals
4. Conclusions
Acknowledgements
영어 초록
APro, developed in KAERI for the process-based total system performance assessment (TSPA) of deep geological disposal systems, performs finite element method (FEM)-based multiphysics analysis. In the FEM-based analysis, the mesh element quality influences the numerical solution accuracy, memory requirement, and computation time. Therefore, an appropriate mesh structure should be constructed before the mesh stability analysis to achieve an accurate and efficient process-based TSPA. A generic reference case of DECOVALEX-2023 Task F, which has been proposed for simulating stationary groundwater flow and time-dependent conservative transport of two tracers, was used in this study for mesh stability analysis. The relative differences in tracer concentration varying mesh structures were determined by comparing with the results for the finest mesh structure. For calculation efficiency, the memory requirements and computation time were compared. Based on the mesh stability analysis, an approach based on adaptive mesh refinement was developed to resolve the error in the early stage of the simulation time-period. It was observed that the relative difference in the tracer concentration significantly decreased with high calculation efficiency.
참고 자료
없음
"방사성폐기물학회지"의 다른 논문
더보기 (4/9)