Improved Quasi-Static Method: IQS Method Implementation for CFEM Diffusion in Rattlesnake
- Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering
The improved quasi-static (IQS) method is a transient spatial kinetics method that involves factorizing flux into space- and time-dependent components. These components include the flux’s power and shape. Power is time-dependent, while the shape is both space- and time-dependent. However, the impetus of the method is the assumption that the shape is only weakly dependent on time; therefore, the shape may not require computation at every time step, invoking the quasi-static nature. This paper describes the implementation and testing of IQS as an alternative kinetics solver within Rattlesnake to provide improved time performance with minimal reduction in accuracy.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- Contributing Organization:
- Texas A & M Univ., College Station, TX (United States)
- DOE Contract Number:
- AC07-05ID14517
- OSTI ID:
- 1261241
- Report Number(s):
- INL/EXT-16-38059; TRN: US1601585
- Country of Publication:
- United States
- Language:
- English
Similar Records
IMPLEMENTATION OF THE IMPROVED QUASI-STATIC METHOD IN RATTLESNAKE/MOOSE FOR TIME-DEPENDENT RADIATION TRANSPORT MODELLING
Improved Quasi-Static Method with Step Doubling Time Adaptation
Solution of the improved and generalized quasi-static methods by Kaps-Rentrop integration with step-size control
Conference
·
Mon Feb 01 00:00:00 EST 2016
·
OSTI ID:1261241
Improved Quasi-Static Method with Step Doubling Time Adaptation
Journal Article
·
Fri Jul 01 00:00:00 EDT 2016
· Transactions of the American Nuclear Society
·
OSTI ID:1261241
Solution of the improved and generalized quasi-static methods by Kaps-Rentrop integration with step-size control
Journal Article
·
Sun Dec 31 00:00:00 EST 1995
· Transactions of the American Nuclear Society
·
OSTI ID:1261241