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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
W. Slagter
Nuclear Science and Engineering | Volume 66 | Number 1 | April 1978 | Pages 84-92
Technical Paper | doi.org/10.13182/NSE78-A15190
Articles are hosted by Taylor and Francis Online.
This paper deals with the application of the finite element method to solve the momentum equation for the central subchannel of a fuel rod bundle. The Galerkin procedure in the method of weighted residuals is used to form the nonlinear algebraic equations that are solved by means of the Newton-Raphson approach. For turbulent flow, the eddy diffusivities are determined by Prandtl's mixing length hypothesis. The mixing lengths perpendicular and parallel to the wall are calculated from geometrical conditions using relations obtained by various authors. The results obtained are critically compared with experimental data and also with those obtained by finite difference procedures. There is a close agreement between the finite element results and other calculated data. Corresponding results also show a good agreement with experimental data available.
