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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 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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From renaissance to reality: Infrastructure for a global nuclear fuel cycle
Dale Klein
This article was adapted from the author’s speech during a plenary at the 21st International Symposium on the Packaging and Transportation of Radioactive Materials (PATRAM 2025), San Antonio, Texas, July 2025.
There has been a lot of discussion lately about reforming the Nuclear Regulatory Commission. But I want to be clear: When it comes to nuclear safety and security, there is no place for partisan politics. I support efforts to streamline regulatory processes, but the independence and integrity of the NRC must remain sacrosanct. If we are serious about expanding nuclear power and reclaiming our global leadership in nuclear technology, having a strong independent regulator is fundamental.
Right now, we’re on the edge of a global nuclear resurgence driven by rising demand from data centers, growing concerns about energy security, and the need to decarbonize industry.
Technical Session|Computational Thermal Hydraulics
Monday, August 21, 2023|3:30–5:10PM EDT|Columbia 9/10
Session Chair:
Thomas Norddine (EdF)
Alternate Chair:
James Vulcanoff (VCU)
Session Organizer:
Igor A. Bolotnov
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2-D URANS Simulation of Liquid Metal Crossflow in Tube Bundle Using Algebraic Heat Flux Model
3:30–3:50PM EDT
Namhyeong Kim (Pohang Univ. Science and Technology), Jae Hyun Choi (Pohang Univ. Science and Technology), Seong Min Shin (Pohang Univ. Science and Technology), Su Won Lee (Pohang Univ. Science and Technology), HangJin Jo (Pohang Univ. Science and Technology)
Paper
LES and RANS Modeling of an 84-pin Hexagonal Rod Bundle with Spacer Grid
3:50–4:10PM EDT
Adam R. Kraus (Penn State), Elia Merzari (Penn State)
Evaluation of RANS vs. LES Simulation of Fluid Flow Through 3x3 Rod Bundle with a Simple Spacer Grid as a Precursor to Coupled Fluid-Structure Interaction Simulations
4:10–4:30PM EDT
Landon Brockmeyer (ANL), Nadish Saini (ANL), Adrian Tentner (ANL), Elia Merzari (Penn State)
Coupled RANS Simulation of Sodium-Cooled Fast Reactor Components Using the Spectral Element Code Nek5000
4:30–4:50PM EDT
Nadish Saini (ANL), Haomin Yuan (ANL), Dillon Shaver (ANL)
Large Eddy Simulation of a 61-Pin Wire-Wrapped Bundle with a Localized Blockage
4:50–5:10PM EDT
Octavio Bovati (TAMU), Yassin A. Hassan (TAMU)
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