Vectorization of the light water reactor transient analysis code RELAP5

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Nucl. Sci. Eng.; (United States)

OSTI ID:5903449

Ishiguro, M; Harada, H; Shinozawa, N; Naraoka, K

An experience with the vectorization of the light water reactor transient analysis code RELAP5/MOD1 on a vector supercomputer FACOM VP-100 (peak speed 250 million floating point operations/s, clock period 7.5 ns) is described. The approach to the vectorization is based on the junction and volume level parallelisms for the hydrodynamic model, and the heat structure and heat mesh levels for the heat transfer model. The VP-100 vectorized code version yields a 2.4 to 2.8 factor speed increase over the FACOM M-380 computer, depending on the number of spatial cells being used. The M-380 is an IBM-type computer with the same speed as the VP-100 in scalar mode.

• Research Organization: Japan Atomic Energy Research Institute, Tokai, Ibaraki
• OSTI ID: 5903449
• Journal Information: Nucl. Sci. Eng.; (United States), Vol. 92:1
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
BWR TYPE REACTORS
REACTOR OPERATION
REACTOR SAFETY
TRANSIENTS
COMPUTER CALCULATIONS
VECTOR PROCESSING
PWR TYPE REACTORS
WATER COOLED REACTORS
HEAT TRANSFER
HYDRODYNAMIC MODEL
IBM COMPUTERS
PERFORMANCE
SUPERCOMPUTERS
VELOCITY
COMPUTERS
DIGITAL COMPUTERS
ENERGY TRANSFER
MATHEMATICAL MODELS
OPERATION
PARTICLE MODELS
PROGRAMMING
REACTORS
SAFETY
STATISTICAL MODELS
THERMODYNAMIC MODEL
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 - Power Reactors
Nonbreeding
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990200 - Mathematics & Computers