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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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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Divya Jyoti Prakash, Youho Lee (Univ of New Mexico)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 600-611
Poor resistance to thermal shock is one of the major limiting factors for ceramic materials to be used as nuclear structural materials. Most past efforts to improve thermal shock tolerance focused on increasing material strength, thermal conductivity. As much as the material aspect of thermal shock tolerance is concerned, convective heat transfer is the other critical component for thermal shock tolerance, as it determines non-uniform temperature fields leading to thermal stresses. Our approach is to achieve thermal shock tolerance by reducing surface heat flux with surface modification. We perform a systematic study of the thermal shock experienced by the alumina during quenching by cold water droplet impingement with heated surface temperature ranging from 125°C to 475°C for Weber number ?32. Degree of thermal shock is gauged from the residual strength of material post quenching. We find clear sign of thermal shock fracture for as received hydrophilic alumina due to higher heat flux during nucleate and transition boiling mode of heat transfer. Residual strength is nearly constant for surface modified alumina due to the hydrophobic nano-fractal surface that promoted film boiling mode of heat transfer, implying significant improvement in thermal shock tolerance with reduced heat flux. This is a novel approach to reduce thermal shock by controlling the heat transfer with surface modification, different from conventional, yet expensive, method of improving the bulk material properties. The presented method of improving thermal shock tolerance can be applied to various nuclear power plant components, including turbine blades.