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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Latest News
No impact from Savannah River radioactive wasps
The news is abuzz with recent news stories about four radioactive wasp nests found at the Department of Energy’s Savannah River Site in South Carolina. The site has been undergoing cleanup operations since the 1990s related to the production of plutonium and tritium for defense purposes during the Cold War. Cleanup activities are expected to continue into the 2060s.
Robert L. Kiang
Nuclear Science and Engineering | Volume 89 | Number 3 | March 1985 | Pages 207-216
Technical Paper | doi.org/10.13182/NSE85-A17542
Articles are hosted by Taylor and Francis Online.
Concerns about nuclear power plant safety have stimulated research in thermal hydraulics of reactor cooling systems. Complementary efforts in computer code development and in experiments using scaled models are being made. The applicability of the experimental results to a full-size power plant system depends on the scaling criteria on which the test facility is designed. Several sets of scaling criteria can be found in the literature, not all of them compatible with one another. A critical review and clarification of a number of these scaling criteria are presented. Specifically, the commonly recognized linear scaling, volume scaling, and several sets of single- and two-phase scaling criteria recently derived by M. Ishii are examined in terms of their limitations and interrelationships. It is shown that (a) as far as thermal-hydraulic modeling is concerned, Ishii's time-distorted scaling is the most general one to date, (b) Ishii's scaling offers the model designer a flexibility in the height of the model, and (c) both the linear and volume scaling are special cases of the Ishii scaling, and each has its own practical limitations.