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
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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
Senate committee hears from energy secretary nominee Chris Wright
Wright
Chris Wright, president-elect Trump’s pick to lead the U.S. Department of Energy, spent hours today fielding questions from members of the U.S. Senate’s committee on Energy and Natural Resources.
During the hearing, Wright—who’s spent most of his career in fossil fuels—made comments in support of nuclear energy and efforts to expand domestic generation in the near future. Asked what actions he would take as energy secretary to improve the development and deployment of SMRs, Wright said: “It’s a big challenge, and I’m new to government, so I can’t list off the five levers I can pull. But (I’ve been in discussions) about how to make it easier to research, to invest, to build things. The DOE has land at some of its facilities that can be helpful in this regard.”
P. Kohut
Nuclear Science and Engineering | Volume 115 | Number 4 | December 1993 | Pages 320-333
Technical Paper | doi.org/10.13182/NSE93-A24062
Articles are hosted by Taylor and Francis Online.
The results of a numerical analysis of the eigenvalue spectrum and eigenmodes of the monoenergetic integral transport equation are presented. Anisotropic scattering effects are explicitly considered with P1 and P2 expansions. Benchmark quality data are produced for three related onedimensional homogeneous multiplying slab problems: fuel with vacuum boundary, fuel with reflectors, and fuel/reflector infinite lattice. Two low-order spatial expansion techniques are investigated and shown to be equivalent in accuracy to analytical or high-order spatial expansion methods. The weak finite element formulation is shown to be slightly more accurate than the comparably sized quadrature formulation. The calculational results of the isotropic and anisotropic analysis are compared with data available in the literature and extended to provide additional results reflecting the effects of linearly and quadratically anisotropic scattering.
