Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/70828
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Secondary flow in semi-circular ducts |
Author: | Larsson, I. Lindmark, E. Lundstrom, T. Nathan, G. |
Citation: | Journal of Fluids Engineering, 2011; 133(10):101206-1-101206-8 |
Publisher: | ASME-Amer Soc Mechanical Eng |
Issue Date: | 2011 |
ISSN: | 0098-2202 1528-901X |
Statement of Responsibility: | I.A.S. Larsson, E.M. Lindmark, T.S. Lundstrӧm and G.J. Nathan |
Abstract: | Turbulent secondary flows are motions in the transverse plane, perpendicular to a main, axial flow. They are encountered in non-circular ducts and can, although the velocity is only of the order of 1–3% of the streamwise bulk velocity, affect the characteristics of the mean flow and the turbulent structure. In this work, the focus is on secondary flow in semi-circular ducts which has previously not been reported. Both numerical and experimental analyses are carried out with high accuracy. It is found that the secondary flow in semi-circular ducts consists of two pairs of counter rotating corner vortices, with a velocity in the range reported previously for related configurations. Agreement between simulation and experimental results are excellent when using a second moment closure turbulence model, and when taking the experimental and numerical uncertainty into account. New and unique results of the secondary flow in semi-circular ducts have been derived from verified simulations and validating laser-based experiments. |
Keywords: | Computational fluid dynamics Doppler measurement flow measurement flow simulation laser velocimetry numerical analysis pipe flow turbulence vortices |
Rights: | © 2011 American Society of Mechanical Engineers |
DOI: | 10.1115/1.4004991 |
Published version: | http://dx.doi.org/10.1115/1.4004991 |
Appears in Collections: | Aurora harvest 5 Environment Institute Leaders publications Mechanical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.