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Effects of Schmidt Number on Turbulent Mass Transfer Around a Rotating Circular Cylinder

[+] Author Affiliations
Dong-Hyeog Yoon, Kyung-Soo Yang, Kyongjun Lee

Inha University, Incheon, Korea

Klaus Bremhorst

University of Queensland, Brisbane, QLD, Australia

Paper No. IHTC14-23090, pp. 755-761; 7 pages
doi:10.1115/IHTC14-23090
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 2
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4937-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

Characteristics of turbulent mass transfer around a rotating circular cylinder have been investigated by Direct Numerical Simulation. The concentration field was computed for three different cases of Schmidt number, Sc = 1, 10 and 100 at Re* = 336. Our results confirm that the thickness of the Nernst diffusion layer decreases as Sc increases. Wall-limiting behavior within the Nernst diffusion layer was examined and compared with those of channel flow. Concentration fluctuation was found to be time-scaled with (r+ )2 while the time scale ratio equals the Schmidt number throughout the Nernst diffusion layer. Scalar modeling closure constants were determined, and turned out to vary considerably within the diffusion layer.

Copyright © 2010 by ASME

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