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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
2020 ANS Virtual Winter Meeting
November 16–19, 2020
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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U.S. reactor technologies to be featured at IAEA conference
A virtual side event at the 64th General Conference of the International Atomic Energy Agency will spotlight U.S. reactor technologies. The free event, US Reactor Technologies: Flexible Energy Security for Real-World Challenges, will be held this Thursday, September 24, from 9:00 a.m. to 10:30 a.m. (EDT).
The event will highlight the capabilities of small modular reactors and other innovative reactors for addressing countries’ current needs. It will also examine anticipated challenges in the future, as well as underscore the need to act now.
The event is sponsored by the U.S. Department of Energy’s Office of Nuclear Energy. Advanced registration is required.
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 | dx.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.