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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
R. C. Anderson, C. A. Erdman, A. B. Reynolds
Nuclear Science and Engineering | Volume 88 | Number 4 | December 1984 | Pages 495-512
Technical Paper | doi.org/10.13182/NSE84-A18368
Articles are hosted by Taylor and Francis Online.
Droplet size distributions from the bulk flashing of 50°C superheated water were measured experimentally. The distributions were lognormal, with a geometric mean droplet diameter Dg of 124 µm and a geometric standard deviation σg of 1.30. Measured droplet size distributions at 40 and 30°C superheat were also lognormal, but the values for Dg and σg were not sufficiently reproducible to compare to the 50°C superheat results. Flashing occurred from a 16.4-ml chamber through a 19-mm-diam opening. The door opening time was 1.6 ms. Measurements were made by collecting droplets containing blue dye on paper mounted on a rotating bicycle wheel. Spot sizes were correlated with droplet sizes using neutron activation analysis by adding samarium nitrate to the water and activating the samarium. Measurements of pressure, temperature, and expansion velocity during the flashing process were made and compared with calculated values with moderately good agreement. Exploratory calculations of maximum droplet diameters based on the critical Weber number (aerodynamic fragmentation) were made with results within a factor of 2 or 3 of the measured values.