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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Ronald F. Tuttle, Sudarshan K. Loyalka
Nuclear Technology | Volume 69 | Number 3 | June 1985 | Pages 337-349
Technical Paper | Nuclear Safety | doi.org/10.13182/NT85-A33616
Articles are hosted by Taylor and Francis Online.
Equations of the collision dynamics of a nonspherical particle with a spherical particle are presented. The drag forces and flow fields are calculated by numerical methods, and the superposition technique is used to estimate two-particle interaction. The equations of motion are solved by Gear’s method. A description is included of the computer program NGCEFF (nonspherical gravitational collision efficiency), which allows computation of the shape factor β for collisions between an oblate spheroid and a sphere, based on the above considerations. The results of the nonspherical gravitational collision efficiencies indicate that it is inappropriate to assume that agglomerates collide with the same efficiencies as spherical particles. During the early stages of agglomerate growth, there will be collisions between chain-like particles and spherical particles; the results clearly show that the collision shape factor β is necessary to modify the spherical gravitational collision efficiencies. Representative results for conditions and aerosol materials characteristic of postulated liquid-metal fast breeder reactor accidents are also presented.