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September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Remembering ANS member Gil Brown
Brown
The nuclear community is mourning the loss of Gilbert Brown, who passed away on July 11 at the age of 77 following a battle with cancer.
Brown, an American Nuclear Society Fellow and an ANS member for nearly 50 years, joined the faculty at Lowell Technological Institute—now the University of Massachusetts–Lowell—in 1973 and remained there for the rest of his career. He eventually became director of the UMass Lowell nuclear engineering program. After his retirement, he remained an emeritus professor at the university.
Sukesh Aghara, chair of the Nuclear Engineering Department Heads Organization, noted in an email to NEDHO members and others that “Gil was a relentless advocate for nuclear energy and a deeply respected member of our professional community. He was also a kind and generous friend—and one of the reasons I ended up at UMass Lowell. He served the university with great dedication. . . . Within NEDHO, Gil was a steady presence and served for many years as our treasurer. His contributions to nuclear engineering education and to this community will be dearly missed.”
Afaque Shams, Dante De Santis, Adam Padee, Piotr Wasiuk, Tobiasz Jarosiewicz, Tomasz Kwiatkowski, Sławomir Potempski
Nuclear Technology | Volume 206 | Number 2 | February 2020 | Pages 283-295
Technical Paper | doi.org/10.1080/00295450.2019.1642683
Articles are hosted by Taylor and Francis Online.
Large-scale computations play an important role in many engineering and scientific applications. In the nuclear field, in particular, the crucial need for accurate simulations and reliable reference data for validation purposes makes high-fidelity simulations an extremely important tool. Due to the too-large computational resources required, these simulations must be performed on dedicated computational facilities. This paper focuses on the description of the high-performance computing facility at the Świerk Computing Centre (CIŚ) in Poland. More specifically, the hardware configuration, software used for on-demand deployment of dedicated subclusters, and queuing systems are described. The computational capabilities at the CIŚ are assessed by performing scalability tests with the massive parallel code NEK5000. The tests assess the influence of the CPU architecture, cooling infrastructure, and interconnection performance on the solver running times. Subsequently, selected applications are presented. These applications concern the direct numerical simulations of mixed convection and fluid flow in a rod bundle. The mean velocity and temperature, the root mean square of the velocity components, and the novel results related to the budgets of turbulent kinetic energy as well the budgets of the wall-normal and streamwise turbulent heat flux are reported for different Prandtl numbers for the mixed convection case. For the rod bundle case an instantaneous temperature for the isothermal and isoflux boundary conditions is reported. Moreover, the frequency of the velocity pulsation has been computed.