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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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
NWTRB to hold public meeting on SNF disposal and corrosion
The Nuclear Waste Technical Review Board, an independent federal agency that evaluates the Department of Energy’s efforts to manage and dispose of spent nuclear fuel and high-level radioactive waste, will hold a two-day public meeting May 21–22 to review information on the DOE’s research and development activities related to the disposal of SNF and HLW in crystalline host rocks and on the corrosion of commercial SNF after disposal.
Sijun Zhang, Xiang Zhao, Zhi Yang
Nuclear Science and Engineering | Volume 189 | Number 2 | February 2018 | Pages 135-151
Technical Paper | doi.org/10.1080/00295639.2017.1388090
Articles are hosted by Taylor and Francis Online.
This paper presents computational fluid dynamics (CFD) gas flow simulations within a segment of the pebble bed core. The realistic packing structure in an entire pebble bed reactor (PBR) is produced by a means of discrete element method. The packing structure in the segment of the PBR core is then obtained. The gas flow through the voids formed by the packed pebbles is computed by CFD. It is found that the packing structure of pebbles in the PBR is crucial to CFD simulation results. On the other hand, in our numerical simulations both large eddy simulation and Reynolds-Averaged Navier-Stokes models are employed to study the effects of different turbulence models on gas flow field and relevant heat transfer. The calculations indicate the complex flow structure within the voids among the pebbles, which play the key role in heat transfer predictions.