Spatial and angular domain decomposition algorithms for the curviliner S[sub N] transport theory method

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Transport Theory and Statistical Physics; (United States)

DOI:https://doi.org/10.1080/00411459308203820· OSTI ID:6235473

Haghighat, A ^[1]

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1. Pennsylvania State Univ., University Park (United States)

This paper surveys several domain decomposition algorithms developed for the 1-D and 2-D curvilinear S[sub N] transport theory methods. The angular and spatial domain decomposition algorithms are incorporated into TWOTRAN-11 (an S[sub N] production code) and the parallel performances of these algorithms are measured on the IBM 3090 multiprocessors, mainly in the [open quote]BATCH[close quote] mode. The measured parallel efficiencies for most test cases are greater than 60%. Further, it is demonstrated that the combined spatial and angular domain decomposition algorithms yield tens of independent tasks without significantly affecting solution convergence. 20 refs., 6 figs., 6 tabs.

• OSTI ID: 6235473
• Journal Information: Transport Theory and Statistical Physics; (United States), Journal Name: Transport Theory and Statistical Physics; (United States) Vol. 22:2-3; ISSN TTSPB4; ISSN 0041-1450
• Country of Publication: United States
• Language: English

Related Subjects

663610* -- Neutron Physics-- (1992-)
663620 -- Physics of Radiations Other Than Neutrons-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCULATION METHODS
COMPUTER CODES
COMPUTERS
CONVERGENCE
DIFFERENTIAL EQUATIONS
DISCRETE ORDINATE METHOD
ELECTROMAGNETIC RADIATION
EQUATIONS
GAMMA RADIATION
IBM COMPUTERS
IONIZING RADIATIONS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
ONE-DIMENSIONAL CALCULATIONS
PARALLEL PROCESSING
PARTIAL DIFFERENTIAL EQUATIONS
PROGRAMMING
RADIATION TRANSPORT
RADIATIONS
T CODES
TRANSPORT THEORY
TWO-DIMENSIONAL CALCULATIONS