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Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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ANS announces 2025 Presidential Citations
One of the privileges of being president of the American Nuclear Society is awarding Presidential Citations to individuals who have demonstrated outstanding effort in some manner for the benefit of ANS or the nuclear community at large. Citations are conferred twice each year, at the Annual and Winter Meetings.
ANS President Lisa Marshall has named this season’s recipients, who will receive recognition at the upcoming Annual Conference in Chicago during the Special Session on Tuesday, June 17.
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.