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Mathematics & Computation
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.
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.”
Ming-Jiu Ni, Shi-Jing Xu, Zeng-Hui Wang, Nian-Mei Zhang
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 292-297
In-Vessel Components - FW, Blanket, Shield & VV | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1) | doi.org/10.13182/FST11-A12368
Articles are hosted by Taylor and Francis Online.
A direct simulation of 3D liquid metal flow in the DCLL (Dual Coolant Lead Lithium) blanket is conducted to study the distribution of pressure and velocity influenced by different material properties of FCI (Flow Channel Insert). A consistent and conservative scheme and projection method on a collocated mesh (Ni et al., J Comp Phys 227 (2007)174-204 and 227 (2007) 205-228) are employed to solve the incompressible Navier-Stokes equations with the Lorentz force included based on an electrical potential formula. As an illustration, three blanket flows have been considered: liquid metal flow in a channel without FCI, with a silicon carbide FCI and with a FCI made of conductive material. It is shown that liquid metal flows in blanket with FCI are 3D developing flows. It is verified that: MHD pressure drop can be reduced by using silicon carbide FCI; PES (Pressure Equilibrium Slot) can balance the pressure difference between two sides of FCI near the slot but the pressure difference is still very large far away from PES; conductive FCI cannot reduce MHD pressure drop. Due to the leakage of current circuit across the slot, with PES opened at one side, a strong reversed velocity is observed in PES. The comparison of velocity distribution between numerical simulation and experiment from LEVI (Xu et al., ISFNT-9, 2009) is conducted. The difference shows that further experimental and numerical analysis is needed.