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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.
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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
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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Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Jae-Jun Jeong, Isabelle Dor, Dominique Bestion
Nuclear Technology | Volume 117 | Number 3 | March 1997 | Pages 267-280
Technical Paper | Nuclear Reactor Safety | doi.org/10.13182/NT97-A35341
Articles are hosted by Taylor and Francis Online.
The CATHARE 2 three-dimensional module is assessed in comparison with the Upper Plenum Test Facility downcomer test 7, which was performed to obtain full-scale data on downcomer and lower plenum refill behavior during the refill phase of a loss-of-coolant accident. New discretizations for the equation of motion, named Mods. D and R, are suggested and implemented in the three-dimensional module. Mod. A is also investigated, which defines a new junction void fraction used to calculate interfacial friction. Using the standard and the modified three-dimensional modules, the four experiments, test 7 runs 200 through 203, are simulated with the downcomer nodalized as an 8 × 1 × 8 mesh. Sensitivity calculations associated with interfacial friction, condensation, and nodalization are also performed. The calculation results show that the discretization of the momentum convection is very important in strongly heterogeneous flow conditions. Mod. D + A gives the best results so far, and Mod. R + A yields the smallest scatter in the predicted water deliveries to the lower plenum. The results of the sensitivity calculations show that the interfacial friction coefficient of CATHARE 2 is somewhat overestimated and the 8 × 1 × 8 mesh downcomer is fine enough for test 7.