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CFD Modeling of Mass Transfer in the Flow Through an Orifice With ζ-f Model

[+] Author Affiliations
Jinbiao Xiong, Xu Cheng, Yanhua Yang

Shanghai Jiao Tong University, Shanghai, China

Paper No. ICONE20-POWER2012-54464, pp. 463-471; 9 pages
doi:10.1115/ICONE20-POWER2012-54464
From:
  • 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

abstract

Mass transfer enhancement is an important element in flow-accelerated corrosion (FAC). In the present paper the ζ-f model and a compound wall treatment have been tested for high Schmidt number mass transfer in a simple fully developed pipe flow and a flow through an orifice. The test shows that the mass transfer can be well predicted in both flows when the wall is fully resolved with the ζ-f model. The superior performance of the ζ-f model in the flow through an orifice can be attributed to avoiding the utilization of the dimensionless wall distance in the model. However, when the compound wall treatment is utilized together with the ζ-f model, mass transfer can be reasonably predicted only when uτ = Cμ1/4kp1/2 is a fair assumption, as demonstrated in the computation for the fully developed pipe flow. With the compound wall treatment the ζ-f model predicts shorter reattachment length and higher mass transfer rate in the flow through an orifice.

Copyright © 2012 by ASME

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