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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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The 2025 ANS election results are in!
Spring marks the passing of the torch for American Nuclear Society leadership. During this election cycle, ANS members voted for the newest vice president/president-elect, treasurer, and six board of director positions (four U.S., one non-U.S., one student). New professional division leadership was also decided on in this election, which opened February 25 and closed April 15. About 21 percent of eligible members of the Society voted—a similar turnout to last year.
Shisheng Wang, Andrei Rineiski, Liancheng Guo
Nuclear Technology | Volume 196 | Number 3 | December 2016 | Pages 588-597
Technical Paper | doi.org/10.13182/NT16-5
Articles are hosted by Taylor and Francis Online.
The lumped heat transfer methodology is simple, and the solution is very fast, so the lumped parameter approach has been widely used in thermal-hydraulic analysis for fuel pin heat transfer in nuclear reactors. In the conventional lumped thermal analysis of fuel pin structure, each component (such as a pellet, gap, cladding, etc.) is characterized by a concentrated bulk temperature (or averaged temperature), and a bulk thermal resistance. In contrast to this conventional lumped thermal resistance model, in this paper another kind of lumped thermal resistance heat transfer model for fuel pin structure has been developed. In this model, each fuel pin component is still represented by a concentrated lumped mean temperature node, while the location of the mean temperature position of each component is no longer set on the geometrical midpoint center; rather, it is assigned exactly onto the analytical temperature profile. Two thermal resistance elements are assigned for each component in this new model; between each component surface and its associated lumped mean temperature node a thermal resistance is assigned. Heat conduction in the radial direction between the mean temperature nodes of different components is purposely defined to take place at the in-between surface nodes. With this new arrangement, the location of the mean temperature positions for each component can be determined analytically, and all the thermal resistances are redefined, accordingly. The advantage of the presented method is that the temperature profile in the whole pin at any radial position can be reconstructed after a quite easy lumped heat transfer calculation. This advanced methodology can be used in nuclear reactor simulation studies where the fastness of the solution is of concern. It is of great advantage, e.g., for the early prediction of the formation of an internal molten fuel cavity within a fuel pin using this temperature profile, before the lumped pellet average temperature reaches the fuel melting point. This lumped thermal resistance model can be readily used for the sodium-cooled fast reactor design, especially for the optimized design of the pin structure. It can be also extended to the restructured fuel pin through the way that each restructured zone is treated as an individual component, e.g., for taking into account temperature-dependent thermophysical properties.