Immersed boundary—thermal lattice Boltzmann method for the moving simulation of non-isothermal elliptical particles
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Karimnejad S., Amiri Delouei A., Nazari M., Shahmardan M.M., Rashidi M.M., Wongwises S.
Publisher: Elsevier
Publication year: 2019
Journal: Nuclear Engineering and Technology (1738-5733)
Volume number: 138
Issue number: 6
Start page: 4003
End page: 4017
Number of pages: 15
ISSN: 1738-5733
eISSN: 1738-5733
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
We propose a scaled-down experimental model of vertical air-natural convection channels by applying the modified Ishii–Kataoka scaling method with the assistance of numerical analyses to the Reactor Vault Cooling System (RVCS) of the Proto-type Gen-IV Sodium-cooled fast reactor (PGSFR) being developed in Korea. Two major non-dimensional numbers (modified Richardson and Friction number) from the momentum equation and Stanton number from the energy balance equation were identified to design the scaled-down experimental model to assimilate thermal-hydraulic behaviors of the natural convective air-cooling channel of RVCS. The ratios of the design parameters in the PGSFR RVCS between the prototype and the scaled-down model were determined by setting Richardson and Stanton number to be unity. The friction number which cannot be determined by the Ishii-Kataoka method was estimated by numerical analyses using the MARS-KS system code. The numerical analyses showed that the friction number with the form loss coefficient of 2.0 in the scale-down model would result in an acceptable prediction of the thermal-hydraulic behavior in RVCS. We also performed experimental benchmarking using the scaled-down model with the MARS-KS simulations to verify the appropriateness of the scale-down model, which demonstrated that the temperature rises and the average air flow velocity measured in the scale-down model. © 2020 Korean Nuclear Society
Keywords
Asymmetric heating, RVCS, Scaling analysis, Vertical parallel plate
Contact Information