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Accurate Prediction of Friction Factor for Laminar Flow in Irregular Annuli

[+] Author Affiliations
O. M. Haddad

Jordan University of Science and Technology, Irbid, Jordan

M. Q. Al-Odat

Al-Balqa Applied University, Amman, Jordan

Paper No. HT-FED2004-56160, pp. 157-164; 8 pages
doi:10.1115/HT-FED2004-56160
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 1
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4690-3 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

Steady fully-developed laminar flows of an incompressible fluid in an annulus of different irregular cross-sectional geometry are investigated numerically. Accurate prediction of the friction factor of these flows is obtained using the high-order finite element method. This study is focused on the annular flow between rectangular and triangular ducts under all possible arrangements. Our results showed excellent agreement with the corresponding results available in the literature. It is found that for all cases considered, the increase in the hydraulic radius of the annular area would lead to a decrease in the value of (fRe). In addition, for a fixed hydraulic radius: it is found that the square in triangle case (TS-case) has the lowest value of (fRe) whereas the square in square case (SS-case) has the largest value of (fRe).

Copyright © 2004 by ASME

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