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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Supplier Showcase focus: Reducing cumulative radiological exposure
The American Nuclear Society is hosting a new Supplier Showcase webinar, “Reducing Cumulative Radiological Exposure with Advanced Source Term Removal Technologies,” on October 15 from 2:00 p.m. to 3:00 p.m. (EDT) on recent advancements in decontamination technology.
The webinar is free for all viewers and requires registration.
A. Bhattacharya, S. D. Yu
Nuclear Science and Engineering | Volume 174 | Number 1 | May 2013 | Pages 60-78
Technical Paper | doi.org/10.13182/NSE12-31
Articles are hosted by Taylor and Francis Online.
This paper presents the development of comprehensive computational fluid dynamics models for unsteady flows of coolant through a string of 12 CANDU 6 fuel bundles with angular misalignments inside a pressure tube by means of large eddy simulation. The computational scheme is first validated against the numerical and experimental data available in the literature for an array of parallel rods without end plates. The converged numerical results for the 12-bundle string are then successfully obtained by utilizing 60 supercomputers and parallel processing. The computed mean and root-mean-square values of the lateral fluid forces indicate that it is necessary to model the entire fuel string in a channel to accurately quantify the unsteady flow-induced excitations.