Full Core Reactor Analysis: Running Denovo on Jaguar

Conference · Sat Dec 31 23:00:00 EST 2011

OSTI ID:1039610

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

---

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 Laboratory (ORNL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1039610
• Country of Publication: United States
• Language: English

Related Subjects

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