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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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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 since 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. local time 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.”
Shurong Ding, Yongzhong Huo
Nuclear Technology | Volume 163 | Number 3 | September 2008 | Pages 416-425
Technical Paper | Fuel Cycle and Management | doi.org/10.13182/NT08-A3999
Articles are hosted by Taylor and Francis Online.
A metal-matrix dispersion fuel plate is considered. Taking account of the actual geometry, a special three-dimensional representative volume element is developed according to the particle distributions, which might characterize not only the macro deformation along the thickness but also the micro stress-strain fields. An elastoplastic analysis using the finite element method is carried out for the thermal-mechanical behaviors induced only by the thermal effects. The distributions of the thermal stresses at the fuel particles and the matrix are given, and the effects of the surface heat transfer coefficients, the heat generation rates of the fuel particles, and the degraded conductivities of the fuel particles along with the burnup on the stresses and the size variations of the plate thickness are investigated. The research results indicate that the internal stress distributions are not spherically symmetrical. With increasing surface heat transfer coefficients, the first principal stresses at the particles and the matrix both fall, and the thickness increments decrease. The first principal stresses at the fuel particles and the matrix both grow with increasing heat generation rates, and the thickness variations linearly increase. With decrease of the thermal conductivities of the fuel particles, the first principal stresses at the matrix increase, and the relative stresses at the particles decrease.