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Computational Study on the Particle Sedimentation Performance of a Reactor Building Floor Weir by Means of Two-Dimensional Lattice Boltzmann Method

[+] Author Affiliations
Jong Woon Park, Jinsu Kim

Dongguk University, Gyeongju, Gyeongbuk, Korea

Won Seok Kim

Bumwoo Heavy Industry, Haman, Gyeongnam, Korea

Keun Sung Lee

Korea Hydro & Nuclear Power, Daejeon, Korea

Paper No. ICONE20-POWER2012-54182, pp. 411-418; 8 pages
  • 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
  • Volume 4: Codes, Standards, Licensing, and Regulatory Issues; Fuel Cycle, Radioactive Waste Management and Decommissioning; Computational Fluid Dynamics (CFD) and Coupled Codes; Instrumentation and Controls; Fuels and Combustion, Materials Handling, Emissions; Advanced Energy Systems and Renewables (Wind, Solar, Geothermal); Performance Testing and Performance Test Codes
  • Anaheim, California, USA, July 30–August 3, 2012
  • Conference Sponsors: Nuclear Engineering Division, Power Division
  • ISBN: 978-0-7918-4498-4
  • Copyright © 2012 by ASME


A reactor building floor weir (RBFW) is proposed as a simple as well as an efficient option to sediment particulate debris generated after loss of coolant accident of a nuclear power plant and its performance is computationally studied by means of two-dimensional Lattice Boltzmann Method (LBM) with momentum exchange boundary conditions. After benchmarking against a standard problem of a flow past a cylinder at relatively low Reynolds numbers, the RBFW is simulated for diverse parametric conditions such as height, inclination angle, number of weirs (one or two) and the distance between two weirs. The weir performance is measured by the area of quiescent and/or downward reverse flow region where particles have more chance to sediment. It is found a wake causing reverse downward flow behind the weir mainly contributes to generating the quiescent flow region. And the most effective option in terms of particle sedimentation performance is found to be relatively tall double weirs separated by two weir heights.

Copyright © 2012 by ASME



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