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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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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.”
Robert Martin, Farrokh Najmabadi
Fusion Science and Technology | Volume 60 | Number 2 | August 2011 | Pages 793-797
Computational Tools, Modeling & Validation | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 2) | doi.org/10.13182/FST11-A12482
Articles are hosted by Taylor and Francis Online.
Commercial inertial fusion energy power plants will require 5-20Hz fusion target injection rates for utility-scale power production. To mitigate damage from target emission, some designs include a buffer gas in the chamber to reduce heat and particle fluxes to the chamber wall. The evolution of chamber environment between shots is an important issue as residual heat and eddies in the gas pose a serious threat on target survival during injection and target trajectory.We have simulated the evolution of a direct-drive IFE chamber with helium, deuterium, and xenon buffer gases at several densities. To evaluate the link between these simulations and the risk posed to a direct-drive target, we modify an analytical expression of the free-molecular heat flux on a surface element to account for the possibility of chamber gas condensation on the target. We show this expression compares favorably with Monte Carlo simulations in the same gas regime. These results are used to estimate risk for target survival based on several target heating failure modes. Though lower density chamber gas would improve target survival, experimental quantification of several key gas-surface interaction coefficients for cryogenic targets could open the chamber gas design window.