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Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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Nicholas Tsoulfanidis—ANS member since 1969
As an undergraduate I studied physics at the University of Athens. I entered the university in 1955 after successfully passing a national exam (came up fourth in a field of about 700 candidates). Upon graduation and finishing my mandatory two-year military service, the plan was to teach physics either in a public high school or as a tutor for a private for-profit institution, preparing high school students for the national exam.
Rahman S. Abdulmohsin, Muthanna H. Al-Dahhan
Nuclear Technology | Volume 198 | Number 1 | April 2017 | Pages 17-25
Technical Paper | doi.org/10.1080/00295450.2017.1292818
Articles are hosted by Taylor and Francis Online.
In the dynamic core of nuclear pebble bed reactors, the prediction of the fluid flow within the packing determines the heat transfer characteristics and, hence, the performance of these reactors.
The fluid flow of the gas phase can be characterized and quantified in terms of the pressure drop coefficient. Therefore, in this work, the pressure drop in a packed pebble bed having different aspect ratios (ratio of the diameter of the bed to the diameter of the pebbles) has been measured experimentally in a separate-effects pilot-plant scale and cold-flow experimental setup of 0.3 m in diameter using a differential pressure transducer technique. The effects of superficial gas velocity have been investigated using a range of velocities from 0.01 to 2 m/s covering both the laminar and turbulent flow regimes. In addition, the effect of bed structure (aspect ratio) on the pressure drop coefficient has been investigated for the studied packed pebble bed. The results show the strong dependence of the pressure drop on both the aspect ratio and, hence, the porosity of the bed and the coolant gas velocity. The obtained experimental results have been used to evaluate the predictions of the correlations recommended for pressure drop estimation in packed pebble bed nuclear reactors. The present work provides insight on the pressure drop and fluid flow of the gas phase in the studied bed using an advanced technique and methodology.