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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
When your test capsule is the test: ORNL’s 3D-printed rabbit
Oak Ridge National Laboratory has, for the first time, designed, printed, and irradiated a specimen capsule—or rabbit capsule—for use in its High Flux Isotope Reactor (HFIR), the Department of Energy announced on January 15.
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.