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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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Nuclear Science and Engineering
November 2025
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Latest News
NEA report calls for more accurate data on SNF heat decay
The OECD Nuclear Energy Agency has issued a report calling for more-detailed information on tracking the decay heat of spent nuclear fuel from light water reactors. According to the NEA, the report highlights the increasing importance of accurate decay heat estimations due to evolving fuel characteristics, including higher initial fuel enrichment, increased burn-up rates, and extended reactor cycle lengths.
The report, Summary of the NEA Assessment on Spent Nuclear Fuel Decay Heat for Light Water Reactors, summarizes the findings of a subgroup of the NEA’s Working Party on Nuclear Criticality Safety (WPNCS), which ran from January 2022 to January 2024.
Advances in Thermal Hydraulics (ATH 2024)
Technical Session
Tuesday, November 19, 2024|3:15–5:00PM EST|Coral A
Session Chair:
Sofiane Benhamadouche (EDF)
Alternate Chair:
Jun Fang (ANL)
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Nucleation Site Interactions in High-Fidelity Pool Boiling Simulations
3:15–3:35PM EST
Anna Iskhakova (NCSU), Om Jagtap (NCSU), Nam T. Dinh (NCSU), Igor A. Bolotnov (NCSU)
Paper
Presentation Slides (Visible to Attendees)
Turbulent to Laminar Flow Transition Study in Parallel Plate Geometry Using Direct Numerical Simulation
3:35–3:55PM EST
Alexey Burbasov (NCSU), Tri Nguyen (Penn State), Elia Merzari (Penn State), Igor A. Bolotnov (NCSU)
CFD Simulation of Flow Distribution in Molten Salt Reactor Experiment Lower Plenum
3:55–4:15PM EST
Jun Fang (ANL), Dillon Shaver (ANL), Tingzhou Fei (ANL)
Validation of DNB Prediction Capability of STAR-CCM+ Eulerian-Eulerian Multiphase Flow Model Under Inclined Conditions for Floating Nuclear Power Plant
4:15–4:35PM EST
Giwon Bae (Seoul Nat'l Univ.), Hyoung kyu Cho (Seoul Nat'l Univ.)
Computational Analysis of Molten Salt Freeze Valves with STAR-CCM+
4:35–4:55PM EST
Anutam Bairagi (Univ. New Mexico), Minghui Chen (Univ. New Mexico)
Comparing Fidelity of RANS Turbulence Closures for Modeling Buoyant Jets Under Thermal Stratification
4:55–5:05PM EST
Som Dutta (Utah State), Anton Kadomtsev (Utah State), Mauricio Tano (INL), Izabela Gutowska (Oregon State), Paul Fischer (Univ. Illinois, Urbana-Champaign)
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