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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
J. D. Rader, B. H. Mills, D. L. Sadowski, M. Yoda, S. I. Abdel-Khalik
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 223-227
Divertor & High Heat Flux Components | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1) | doi.org/10.13182/FST10-306
Articles are hosted by Taylor and Francis Online.
As a part of the ARIES study, a modular, helium-cooled, jet-impingement, finger-type divertor design that can accommodate an incident heat flux of 10 MW/m2 has been proposed. An experimental and numerical investigation was undertaken to quantify the thermal performance of a design that closely resembles previously studied finger-type divertors (e.g. HEMJ and HEMP). Experiments were conducted using air in a test module heated with an oxy-acetylene torch to achieve incident heat fluxes as great as 2 MW/m2. These experimental results were compared to numerical predictions.The numerical studies documented here were performed using a commercial computational fluid dynamics (CFD) software package. Simulations were carried out for two different test sections with and without a hexagonal array of cylindrical fins and otherwise identical dimensions and for two different flow directions, reverse flow corresponding to radial inward flow, and forward flow corresponding to jet impingement followed by radial outward flow. The numerical predictions for effective heat transfer coefficients (HTC) are in reasonable agreement with the experimental results for the test section without fins. The numerical predictions overpredict the HTCs for the cases with fins, and resolving this discrepancy is the subject of ongoing work.