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Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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
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.”
L. Bühler
Fusion Science and Technology | Volume 52 | Number 3 | October 2007 | Pages 595-602
Technical Paper | First Wall, Blanket, and Shield | doi.org/10.13182/FST07-A1553
Articles are hosted by Taylor and Francis Online.
In a systematic parametric study 3D MHD flows in expansions of rectangular ducts with different expansion ratios, expansion lengths, and various wall conductivities are analyzed for fusion relevant parameters in order to establish a data base useful for the design of liquid metal blankets for fusion reactors. In currently considered helium-cooled liquid metal blankets the liquid metal velocities are very small so that inertia is often negligible in comparison with the electromagnetic forces. In the core of the flow the major balance of forces establishes between pressure and Lorentz forces while viscous forces are confined to very thin boundary layers along the duct walls. Near the expansion an intense exchange of flow between the upstream and downstream cores with the corresponding side layers is observed. At the expansion a large fraction of the flow is carried by these thin layers along the side walls. This effect becomes more pronounced with decreasing the length of the expansion region. The three-dimensional flow near the expansion gives rise to additional electric currents, which are responsible for higher pressure drop compared with fully developed conditions. This additional pressure drop and the flow partitioning between cores and side layers are investigated in detail depending on the relevant governing parameters.