ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
DOE extends Centrus’s HALEU production contract by one year
Centrus Energy has announced that it has secured a contract extension from the Department of Energy to continue—for one year—its ongoing high-assay low-enriched uranium (HALEU) production at the American Centrifuge Plant in Piketon, Ohio, at an annual rate of 900 kilograms of HALEU UF6. According to Centrus, the extension is valued at about $110 million through June 30, 2026.
Robert W. Lyczkowski
Nuclear Science and Engineering | Volume 76 | Number 2 | November 1980 | Pages 246-249
Technical Note | doi.org/10.13182/NSE80-A19454
Articles are hosted by Taylor and Francis Online.
The characteristics for the slowly varying one-dimensional, single-phase flow equations with rigid and elastic walls are analyzed. The analysis of the characteristics for a single fluid in an elastic tube is extended to a set of analogous one-dimensional, two-phase flow equations having a common pressure. It is found that if the area available for flow for each phase is taken to be a function of a single pressure complex characteristics can arise. This analysis may explain part of the reason why two-phase flow equations having equal phase pressures are generally not globally hyperbolic.
