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A Study on Flow and Heat Transfer in Strongly Curved U-Bend

[+] Author Affiliations
R. S. Amano, B. Song, M. S. Reza

University of Wisconsin at Milwaukee, Milwaukee, WI

Paper No. GT2005-68005, pp. 9-26; 18 pages
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 3: Turbo Expo 2005, Parts A and B
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4726-8 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME


The secondary flows inside a sharp U-bend are numerically studied by using several different turbulence models. The finite volume difference method incorporated with the higher-order bounded interpolation scheme has been employed in the present study. The present results reveal that non-linear low-Re k-ω model and the other models produce the quite different secondary flow patterns. It is shown that the present non-linear model produces satisfactory predictions of the flow development inside the sharp U-bend comparing with linear Launder-Sharma model.

Copyright © 2005 by ASME



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