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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
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Satish Kumar Dhurandhar, S. L. Sinha, Shashi Kant Verma
Nuclear Science and Engineering | Volume 198 | Number 10 | October 2024 | Pages 1965-1983
Research Article | doi.org/10.1080/00295639.2023.2280350
Articles are hosted by Taylor and Francis Online.
A grid spacer with a vane is an influential segment in reactor fuel channels. A vane produces significant effects on flow mixing and augmentation of heat transfer in subchannnels. The purpose of this work was to do a computational fluid dynamics (CFD) analysis on the effects of a grid spacer vane on the thermal-hydraulic performance of fluid in a 5×5 fuel channel. A square array of a 5×5 fuel channel was used for this analysis with a pitch–to–rod diameter ratio of 1.33 and a blockage ratio of the grid spacer of 0.16. The relative study was made for the thermal-hydraulic performance among a grid spacer with a vane, a grid spacer (without a vane), and without a grid spacer (bare bundle). Analyses were made for fluid pressure of 15.5 MPa, inlet temperature of 583 K, and velocity of 4.74 m/s. The SST k-ω and RNG k-ε turbulence models were used to analyze flow phenomena and thermal performance. CFD results were validated with experiment data and were also compared with correlations proposed by researchers. The results were analyzed by different methods such as data curves, streamlines, and vector and contour plots. The results show that the strong characteristics of swirl flow in subchannels cause a greater mixing rate of turbulent flow, which hence improves heat transfer performance. The swirl ratio was observed maximum close downstream to a grid spacer with a vane. Grid spacer effects on heat transfer were noticed from z/Dh = 0 to 20 in downstream.
