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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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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.
A. Hawighorst, H. Kröning, F. Mayinger
Nuclear Science and Engineering | Volume 88 | Number 3 | November 1984 | Pages 376-385
Technical Paper | doi.org/10.13182/NSE84-A18591
Articles are hosted by Taylor and Francis Online.
At an unhealed 4 × 4 rod bundle air/water test facility, optical investigations of the entrainment behavior and countercurrent flow experiments were performed under a large variety of test conditions: flow duct geometry; internals (tie plate, bundle length, number of grid spacers, rod diameter); type of injection (different nozzles, porous sinter metal) different mass flux for air and water. In addition, several flooding models were compared with experimental data. It was found that the type of injection has only a weak influence, whereas the geometric conditions upstream of the narrowest flow area (presence of bundle and grid spacer) have an important effect on the flooding behavior. In addition, a comparison of the applicability of different flooding models shows that only the models based on dimensionless numbers expressed by superficial velocities show a good agreement with experimental data.