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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Geethpriya Palaniswaamy, Sudarshan K. Loyalka
Nuclear Technology | Volume 160 | Number 2 | November 2007 | Pages 187-204
Technical Paper | Reactor Safety | doi.org/10.13182/NT160-187
Articles are hosted by Taylor and Francis Online.
Nuclear aerosols formed during nuclear reactor accidents or explosions evolve via natural transport processes as well as under the influence of engineered safety features. These aerosols can be hazardous and may pose risk to the public if released into the environment. Computations of their evolution, movement, and distribution involve the study of various processes such as coagulation, deposition, condensation, evaporation, etc., and are influenced by factors such as particle shape, charge, radioactivity, and spatial inhomogeneity. These many processes and factors make the numerical study of nuclear aerosol evolution computationally very complicated. The Direct Simulation Monte Carlo (DSMC) technique was developed to elucidate the role of various phenomena that influence the evolution of nuclear aerosols. This will allow, then, for an assessment of the limitations of other methods used at present. Coagulation, deposition, and source reinforcement processes for a multicomponent, aerosol dynamics problem have been explored. As a simple verification, the DSMC results were compared with analytical results for a single-component aerosol dynamics problem with coagulation and deposition processes. In addition, the DSMC results were compared against those obtained using the sectional method for several multicomponent test problems with the same component densities. It is clear from the present results that the assumption of a single mean density is not appropriate in such problems because of the complicated effect of component densities on the aerosol processes.