Simplified multigrid acceleration in the PENTRAN 3-D parallel code

Journal Article · Tue Dec 31 00:00:00 EST 1996 · Transactions of the American Nuclear Society

OSTI ID:426397

Sjoden, G E; Haghighat, A ^[1]

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

A number of current problems in radiation transport involve very large three-dimensional (3-D) geometries, several energy groups, and thousands to millions of meshes. To accurately solve 3-D problems in a reasonable period of time, massively parallel discrete ordinates (S{sub n}) codes are needed, such as the recently developed PENTRAN code, implemented on the IBM-SP2 with complete phase-space decomposition. In spite of the many advantages offered by parallel processing, acceleration schemes are still required to render a solution because convergence of some S{sub n} problems without acceleration methods can be very difficult.

• OSTI ID: 426397
• Report Number(s): CONF-961103-; ISSN 0003-018X; TRN: 96:006307-0119
• Journal Information: Transactions of the American Nuclear Society, Vol. 75; Conference: Winter meeting of the American Nuclear Society (ANS) and the European Nuclear Society (ENS), Washington, DC (United States), 10-14 Nov 1996; Other Information: PBD: 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
RADIATION TRANSPORT
DISCRETE ORDINATE METHOD
CONVERGENCE
P CODES
THREE-DIMENSIONAL CALCULATIONS
PARALLEL PROCESSING