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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
Latest Magazine Issues
Jul 2024
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Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
ARPA-E announces $40 million to develop transmutation technologies for UNF
The Department of Energy’s Advanced Research Projects Agency–Energy (ARPA-E) announced $40 million in funding to develop cutting-edge technologies to enable the transmutation of used nuclear fuel into less-radioactive substances. According to ARPA-E, the new initiative addresses one of the agency’s core goals as outlined by Congress: to provide transformative solutions to improve the management, cleanup, and disposal of radioactive waste and spent nuclear fuel.
Ji Hwan Lim, Minkyu Park
Fusion Science and Technology | Volume 78 | Number 5 | July 2022 | Pages 395-413
Technical Paper | doi.org/10.1080/15361055.2022.2036574
Articles are hosted by Taylor and Francis Online.
The effect of the hypervapotron (HV) fin angle on heat transfer was analyzed through visualization experiments and subcooled flow boiling experiments. An HV channel with a fin angle of 45 deg had a higher onset-of-nucleate-boiling heat flux than the typical HV channel. Additionally, as the heat flux increased, the bubble-sliding effect caused by the tilted fin was visualized, and it was observed that the vapor inside the fin was agglomerated by the sliding flow and driven into the side slot. When the fin angle of the typical HV channel was set as 0 deg, as the tilted angle of the fin increased, the heat transfer and critical heat flux (CHF) were improved owing to the secondary flow generated by the sliding effect. When the fin angle reached 45 deg, the CHF value was improved by 81% compared with the typical HV channel, which was the highest enhancement rate among the evaluated HV channels. However, when the fin angle exceeded 45 deg, the vapors aggregated more rapidly as the sliding velocity induced inside the fin increased. Furthermore, the two-phase pressure drop was analyzed through differential pressure measurements. The 45-deg tilted HV channel had a higher onset-of-significant-void heat flux value than all the other channels (HV, swirl, smooth, flat channels).