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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.
Joseph J. Cambareri (NCSU), Jun Fang (ANL), Andre Gouws, Igor A. Bolotnov (NCSU)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 335-340
Understanding the dynamics behind bubbly flows is critical to the analysis of a pressurized water reactor (PWR) system, but there are still phenomena within bubbly flows that are not fully understood. Utilizing direct numerical simulations (DNS) coupled with interface tracking methods (ITM), high-fidelity numerical data can be extracted from bubbly flow simulations for use in the development of closure laws and mechanistic models. With the use of a bubble tracking algorithm that can record information specific to individual bubbles within the flow, numerical data can be gathered on a fundamental level. State-of-the-art high performance computing (HPC) facilities were used to simulate two-phase, turbulent flow within the subchannel of a PWR for both a simple subchannel geometry and one with a spacer grid and mixing vanes included. A statistical analysis of the numerical data gathered from these simulations can then be studied to discover the dependency of bubble dynamics upon flow conditions. Bubbles can be split into groups in relation to their distance to the wall, and the dependency of quantities such as the relative velocity or the drag coefficient upon the distance to the wall can be investigated. This work splits previously generated numerical data into seven bubble groups for further statistical analysis, as well as dividing the subchannel into “quadrants” to check for time averaged imbalances in bubble population resulting from geometric influences. These post processing techniques seek to offer insight into the physics behind bubbly flow conditions.