Full Core Reactor Analysis: Running Denovo on Jaguar

Conference · Sun Jan 01 00:00:00 EST 2012

OSTI ID:1039610

Jarrell, Joshua J ^[1]; Godfrey, Andrew T ^[1]; Evans, Thomas M ^[1]; Davidson, Gregory G ^[1]

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1. ORNL

Fully-consistent, full-core, 3D, deterministic simulations using the orthogonal mesh code Denovo were run on the massively parallel computing architecture Jaguar XT5. Using energy and spatial parallelization schemes, Denovo was able to efficiently scale to over 160k processors. Cell-homogenized cross-sections were used with Step-Characteristics, Linear-Discontinuous Finite Element, and Tri-Linear-Discontinuous Finite Element spatial methods. It was determined that using the finite element methods gave considerably more accurate eigenvalue solutions for large aspect ratios meshes than those using Step-Characteristics.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1039610
• Resource Relation: Conference: PHYSOR 2012: Advances in Reactor Physics Linking Research, Industry, and Education, Knoxville, TN, USA, 20120415, 20120420
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER ARCHITECTURE
ASPECT RATIO
CROSS SECTIONS
EDUCATION
EIGENVALUES
FINITE ELEMENT METHOD
REACTOR PHYSICS
PARALLEL PROCESSING
Determininistic Transport
Reactor Analysis
Denovo
Jaguar