A discrete ordinate response matrix method for massively parallel computers

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:7169654

Hanebutte, U R; Lewis, E E

A discrete ordinate response matrix method is formulated for the solution of neutron transport problems on massively parallel computers. The response matrix formulation eliminates iteration on the scattering source. The nodal matrices which result from the diamond-differenced equations are utilized in a factored form which minimizes memory requirements and significantly reduces the required number of algorithm utilizes massive parallelism by assigning each spatial node to a processor. The algorithm is accelerated effectively by a synthetic method in which the low-order diffusion equations are also solved by massively parallel red/black iterations. The method has been implemented on a 16k Connection Machine-2, and S[sub 8] and S[sub 16] solutions have been obtained for fixed-source benchmark problems in X--Y geometry.

• Research Organization: Northwestern Univ., Evanston, IL (United States). Dept. of Mechanical Engineering
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-88ER12810
• OSTI ID: 7169654
• Report Number(s): CONF-910414-39; ON: DE93003463
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
663610 -- Neutron Physics-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
ARRAY PROCESSORS
CALCULATION METHODS
ITERATIVE METHODS
MATHEMATICAL LOGIC
MATRICES
MULTIGROUP THEORY
NEUTRON TRANSPORT THEORY
PARALLEL PROCESSING
PROGRAMMING
TRANSPORT THEORY