Full Core Reactor Analysis: Running Denovo on Jaguar

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Nuclear Science and Engineering

DOI:https://doi.org/10.13182/NSE12-60· OSTI ID:1107822

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 neutron transport 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 more than 160k processors. Cell-homogenized cross sections were used with step-characteristics, linear-discontinuous finite element, and trilinear-discontinuous finite element spatial methods. It was determined that using the finite element methods gave considerably more accurate eigenvalue solutions for large-aspect ratio meshes than using step-characteristics.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1107822
• Journal Information: Nuclear Science and Engineering, Vol. 175, Issue 3; ISSN 0029-5639
• Country of Publication: United States
• Language: English

Related Subjects

Deterministic Transport
Reactor Analysis
Denovo