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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
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.”
Weikai Gao, Xiaowei Li, Xinxin Wu, Jiaqing Zhao, Yiyang Zhang, Xiaowei Luo (Tsinghua Univ)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 1193-1198
High Temperature Gas-cooled Reactor usually adopts helical tube bundles for its heat transfer equipment (steam generator or intermediate heat exchanger). The geometrical arrangement of helical tube bundles determines its thermal hydraulic performances. The flow attack angles between the tube axes of helical tubes and the fluid flow directions are smaller than 90 degrees, which is introduced by the inclination of the helical tubes due to upward winding. Except for the parameters of tube diameter, helical diameter, longitudinal pitches, transverse pitches and inclination angles, the inclination direction (or winding direction) of neighboring layers of helical tubes also influences the thermal hydraulic performances. The opposite sense inclination effect is numerically investigated. A three dimensional model having 5 layers of straight tubes with opposite sense inclination of neighboring layers is established. Standard k-? model was used for the turbulence modeling. The velocity and temperature field were investigated. Special attention is paid on the opposite sense inclination effect on pressure drop and heat transfer coefficient. The results show that the opposite sense inclination will lower the heat transfer coefficient and pressure drop coefficient, which coincides with the measured results.