Development and Application of a New High-Efficiency Sparse Linear System Solver in the Thermal-Hydraulic System Analysis Code
Joint Authors
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-09-19
Country of Publication
Egypt
No. of Pages
10
Abstract EN
This paper presents a faster solver named NRLU (Node Reordering Lower Upper) factorization solver to improve the solution speed for the pressure equations, which are formed by RELAP5/MOD3.3.
The NRLU solver uses the oriented graph method and minimal fill-ins rule to reorder the structure of the nonsymmetry sparse pressure matrix.
It solves the pressure matrix by LU factorization.
Then the solver is embedded into the large scale advanced thermal-hydraulic system analysis program RELAP5/MOD3.3.
The comparisons of the original solver and the NRLU solver show that the NRLU solver is faster than the original solver in RELAP5/MOD3.3, and the rate enhancement can be 44.44%.
The results also show that the NRLU solver can reduce the number of fill-ins effectively.
This can improve the calculation speed.
American Psychological Association (APA)
Ge, Li& Liu, Wei& Shan, Jianqiang. 2017. Development and Application of a New High-Efficiency Sparse Linear System Solver in the Thermal-Hydraulic System Analysis Code. Science and Technology of Nuclear Installations،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1203770
Modern Language Association (MLA)
Ge, Li…[et al.]. Development and Application of a New High-Efficiency Sparse Linear System Solver in the Thermal-Hydraulic System Analysis Code. Science and Technology of Nuclear Installations No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1203770
American Medical Association (AMA)
Ge, Li& Liu, Wei& Shan, Jianqiang. Development and Application of a New High-Efficiency Sparse Linear System Solver in the Thermal-Hydraulic System Analysis Code. Science and Technology of Nuclear Installations. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1203770
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203770