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Conference Spotlight
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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Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
New coolants, new fuels: A new generation of university reactors
Here’s an easy way to make aging U.S. power reactors look relatively youthful: Compare them (average age: 43) with the nation’s university research reactors. The 25 operating today have been licensed for an average of about 58 years.
Claudia Dumitrescu, Sebastian Brad, Horia Necula, Mihai Vijulie, Alin Lazar, Catalin Brill, Oleksandr Sirosh, Aleksander Grafov, Andrii Rozhentsev
Fusion Science and Technology | Volume 81 | Number 4 | May 2025 | Pages 285-293
Review Article | doi.org/10.1080/15361055.2024.2434996
Articles are hosted by Taylor and Francis Online.
A computer simulation model developed in the ANSYS Fluent 2022 version R2 package was used for the engineering analysis required to design a counterflow matrix heat exchanger (MHE) for cooling a hydrogen stream. The theoretical data obtained with the simulation model were compared with the experimental data collected during the experimental campaigns carried out in the Cryogenics Laboratory of ICSI Rm. Valcea.
The MHE was tested for three test regimes obtained by theoretical correlations applicable to the current configuration. The Nusselt number, friction factor, and performances theorized by different authors, such as Gnielinski, Miheev, and Mikulin et al. were evaluated. This paper presents comparisons between the results obtained with the simulation model, the experimental values, and the theoretical models from the literature, highlighting the possibility of developing a mathematical model that can be applied to the calculation and design of a MHE.