Convergence analysis of the angular-dependent rebalance iteration method in X-Y geometry

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · Transactions of the American Nuclear Society

OSTI ID:678128

Hong, S G; Cho, N Z ^[1]

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1. KAIST (Korea, Republic of)

Recently, the angular dependent rebalance (ADR) method was developed for acceleration of the scattering source iteration (SI) and applied to various spatial differencing schemes of the discrete ordinates transport method in one- and two-dimensional geometries. In ADR, the lower-order equation is derived by integrating the rebalance form of the discretized transport equation over a coarse angular space. As a result, the lower-order equation resembles the transport equation, and the ADR method can be very easily implemented for various numerical transport methods in general geometry. However, it is difficult to theoretically analyze the stability of the ADR method since the ADR method is nonlinear. The authors study the convergence properties of the ADR iteration method via Cefus and Larsen`s approach (linearization and Fourier analysis) for step characteristic (SC) and constant-constant (C-C) spatial differencing schemes in infinite homogeneous X-Y geometry. The results show that the ADR method is unconditionally stable in such an ideal situation, giving confidence in the observed stability in finite heterogeneous problems.

• OSTI ID: 678128
• Report Number(s): CONF-990605--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 80; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONVERGENCE
DISCRETE ORDINATE METHOD
ITERATIVE METHODS
MESH GENERATION
ONE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS