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Division Spotlight
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
Meeting Spotlight
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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Latest News
NWMO to select Canadian repository site this year
Canada’s Nuclear Waste Management Organization, a not-for-profit organization responsible for the long-term management of the country’s intermediate- and high-level radioactive waste, is set to select a site for a deep geologic repository by the end of the year.
Bryce K. Y. Matsuo, Mark Anderson, Devesh Ranjan
Nuclear Science and Engineering | Volume 176 | Number 2 | February 2014 | Pages 138-153
Technical Paper | doi.org/10.13182/NSE12-85
Articles are hosted by Taylor and Francis Online.
Geometrical effects on the local heat transfer coefficient (HTC) and pressure drop for supercritical carbon dioxide in printed-circuit heat exchangers are numerically quantified. Combinations of different operating pressures (7.5 to 10.2 MPa), mass fluxes [326 to 762 kg/(m2⋅s)], and the enhanced wall treatment k-ε and shear stress transport k-ω turbulence models are investigated using a finite-volume framework. Three different channel geometries are used: a nonchamfered zig-zag (ideal case), a chamfered zig-zag (prototype case), and an airfoil (ideal case). The simulations are compared with experimental results and empirical correlations. A new correlation is developed based on the numerical data obtained and published experimental data for the zig-zag channels. The results show that the local HTC increases with an increase in operating pressure or an increase in mass flux for each channel. The HTC of the zig-zag channel is found to be approximately 2.5 times that of the airfoil; however, the pressure drop is 4.0 to 8.3 times higher. Based on these results, the area goodness ratios of the nonchamfered and chamfered zig-zag channels are respectively 2.65 and 1.57 times larger than that of the airfoil.