Efficient methods for time-absorption (. cap alpha. ) eigenvalue calculations
Conference
·
OSTI ID:6788588
The time-absorption eigenvalue (..cap alpha..) calculation is one of the options found in most discrete-ordinates transport codes. Several methods have been developed at Los Alamos to improve the efficiency of this calculation. Two procedures, based on coarse-mesh rebalance, to accelerate the ..cap alpha.. eigenvalue search are derived. A hybrid scheme to automatically choose the more-effective rebalance method is described. The ..cap alpha.. rebalance scheme permits some simple modifications to the iteration strategy that eliminates many unnecessary calculations required in the standard search procedure. For several fast supercritical test problems, these methods resulted in convergence with one-fifth the number of iterations required for the conventional eigenvalue search procedure.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6788588
- Report Number(s):
- LA-UR-82-3594; CONF-830304-7; ON: DE83004809
- Country of Publication:
- United States
- Language:
- English
Similar Records
Efficient methods for time-absorption (. cap alpha. ) eigenvalue calculations
Application of coarse-mesh rebalance acceleration to Monte Carlo eigenvalue problems
Coarse-Mesh Angular Dependent Rebalance Acceleration of the Discrete Ordinates Transport Calculations
Technical Report
·
Mon Feb 28 23:00:00 EST 1983
·
OSTI ID:6320223
Application of coarse-mesh rebalance acceleration to Monte Carlo eigenvalue problems
Journal Article
·
Wed Mar 31 23:00:00 EST 1976
· Nucl. Sci. Eng., v. 59, no. 4, pp. 326-336
·
OSTI ID:4002454
Coarse-Mesh Angular Dependent Rebalance Acceleration of the Discrete Ordinates Transport Calculations
Journal Article
·
Sun Nov 14 23:00:00 EST 2004
· Nuclear Science and Engineering
·
OSTI ID:20808396