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
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
Li Wu, Jian Xiao, Hong Chen, Jia Li, Songzhi Jiang, Tongmin Wang
Nuclear Technology | Volume 188 | Number 1 | October 2014 | Pages 78-82
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT13-127
Articles are hosted by Taylor and Francis Online.
Main steam isolation valves are used in nuclear steam supply systems. Their sole function is to close, in the improbable event of a rupture in the steam piping. Computational analysis of the valve enables the study of system responses that are otherwise difficult to obtain. In this paper, transient behavior during the valve closing was simulated by static analysis with five typical runs of valve openings. One-way fluid-structure coupling simulations were conducted to investigate the flow patterns and to estimate the deformation and stress of the valve. Results show that the main pressure drop of flow occurs in the throat path. All the deformation and stress of the valve are within allowed limits to ensure safety.