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Division Spotlight
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.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Latest News
Constellation seeks rezone for property adjacent to Illinois plant
While no development details have been released, Constellation is asking to rezone 658.8 acres of land it owns around the Byron nuclear plant in Illinois for possible long-term use.
Minghui Chen, Xiaodong Sun (Univ of Michigan), Richard N. Christensen (Univ of Idaho)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 835-843
Printed circuit heat exchangers (PCHEs) are promising to be employed in high-temperature gascooled reactors (HTGRs) due to their compactness and intrinsic characteristics of capable of providing high-temperature and high-pressure heat for industrial applications. In our previous study, a reduced-scale zigzag-channel PCHE was fabricated out of Alloy 617 and its heat transfer and pressure drop characteristics were investigated experimentally in a high-temperature helium test facility. In our current study, a computational fluid dynamics (CFD) code, STAR-CCM+, was used to simulate the thermalhydraulic performance of the fabricated PCHE with a simplified geometry model. Comparisons between the experimental data and the CFD simulations showed some discrepancies in the pressure drop and heat transfer results, which may be caused by the use of different thermal boundary conditions in the simulations from those in the experiments. The simplified heat exchanger simulation model was divided into eight segments to identify the thermal boundary conditions for the zigzag-channel PCHE. The temperature and heat flux distributions along the fluid flow direction in the heat exchanger for each segment were obtained. It was observed that the temperatures were not constant along the azimuthal direction of a cross section of the flow channel and the helium temperature distribution for each segment presented a wavy shape. However, the global helium temperature distribution along the entire flow channel was approximately linear. For the heat flux distributions, although they were significantly different at different segments, the trend for the heat flux for each segment along the fluid flow direction was similar.