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.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
Senate EPW Committee to hold Nieh nomination hearing
Nieh
The Senate Environment and Public Works Committee will hold a nomination hearing Wednesday for Ho Nieh, President Donald Trump’s nominee to serve as commission at the Nuclear Regulatory Commission.
Trump nominated Nieh on July 30 to serve as NRC commissioner the remainder of a term that will expire June 30, 2029, as Nuclear NewsWire previously reported.
Nieh has been vice president of regulatory affairs at Southern Nuclear since 2021, though since June 2024 he has been at the Institute of Nuclear Power Operations as a loaned executive.
A return to the NRC: If confirmed by the Senate, Nieh would be returning to the NRC after three previous stints totaling nearly 20 years.
Qingming He, Chao Fang, Liangzhi Cao, Haoyu Zhang
Nuclear Science and Engineering | Volume 197 | Number 3 | March 2023 | Pages 472-484
Technical Note | doi.org/10.1080/00295639.2022.2106733
Articles are hosted by Taylor and Francis Online.
This technical note presents a unified framework of stabilized finite element methods for solving the Boltzmann transport equation. The unified framework is derived from the standard Galerkin weak form with a subgrid scale model, which is different from the traditional Petrov-Galerkin finite element framework that modifies the test function to construct the stabilization term. By this method, first, the unknowns are decomposed into their numerical solutions and residuals. The decomposed unknowns are then embedded into the Galerkin weak form with an approximation for the residual, which yields a stabilized variational formula. Different methods of stabilization are derived from different approximations of the residual. Under this framework, all the frequently used stabilized methods can be obtained, including the streamline upwinding Petrov-Galerkin method, the Galerkin least-squares method, and the algebraic subgrid scale method. Thus, a unified framework of such methods is established. The similarities and differences across the different approximations are also compared in this technical note. The numerical results show that the behaviors of different methods are similar with the same stabilization parameters and that all these stabilized techniques can yield satisfactory and stable solutions.