ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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Apr 2025
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Nuclear Science and Engineering
June 2025
Nuclear Technology
May 2025
Fusion Science and Technology
Latest News
Sam Altman steps down as Oklo board chair
Advanced nuclear company Oklo Inc. has new leadership for its board of directors as billionaire Sam Altman is stepping down from the position he has held since 2015. The move is meant to open new partnership opportunities with OpenAI, where Altman is CEO, and other artificial intelligence companies.
Technical Session|Multi-Scale, Multi-Physics Simulations
Wednesday, April 30, 2025|8:00–9:40AM MDT|E.P. Ensley A
Session Chair:
Yaqi Wang (INL)
Alternate Chair:
Vincent Laboure (BWX Technologies)
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Time-Dependent Power Reconstruction Methodology Using Interpolated Fractions and Peaking Factors in the Mixcoatl 2.0 Software
8:00–8:25AM MDT
Vincent Laboure (BWX Technologies), Chase Lawing (BWX Technologies), Phil Hegedus (BWX Technologies), Bryan Zilka (BWX Technologies)
Paper
Solving Point Kinetics Equations Using Matrix Exponentials and Reactivity Extrapolation
8:25–8:50AM MDT
Emmanuel Lefevre (TechnicAtome), Mael Akouz (TechnicAtome)
Presentation Slides (Visible to Attendees) — final presentation (pdf)
Application of the Pathline Method to the Aircraft Reactor Experiment
8:50–9:15AM MDT
Mathis Caprais (CEA), Nathan Greiner (CEA), André Bergeron (CEA)
The Parareal Algorithm as Applied to Coupled Point Kinetics and Thermal-Hydraulics Models for Reactor Transients
9:15–9:40AM MDT
Timothy M. Kiefer (NCSU), Nick J. Adamowicz (Bettis Atomic Power Lab), Gabriel Kooreman (Bettis Atomic Power Lab)
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