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Topological structures of a separation bubble in a ribbed channel

Wang, Lei LU ; Salewski, Mirko LU and Sundén, Bengt LU (2009) Turbulence, Heat and Mass Transfer 6 p.481-484
Abstract
In this study, topological structures of a separation bubble in a ribbed channel are identified and analyzed. Particle image velocimetry (PIV) and POD (proper orthogonal decomposition) filter are used to give the velocity vector field. The ribs obstruct the channel by 20% of its height and are arranged 9 rib heights apart. The Reynolds number is 22000 based on the bulk-mean velocity and channel height. Among a number of interesting features, a distinct Hopf bifurcation is identified. If the initial size of the limit cycle is small, a reversed Hopf bifurcation is also possible.
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
[Host publication title missing]
editor
Hanjalic, K ; Nagano, Y and Jakirlic, S
pages
481 - 484
publisher
Begell House
conference name
Turbulence, Heat and Mass Transfer 6
conference location
Rome, Italy
conference dates
2009-09-14 - 2009-09-18
ISBN
978-156700-262-1
language
English
LU publication?
yes
id
cfda2ff6-2fd0-4d91-a234-9b7bf6693178 (old id 1487562)
date added to LUP
2016-04-04 11:04:27
date last changed
2018-11-21 21:02:30
@inproceedings{cfda2ff6-2fd0-4d91-a234-9b7bf6693178,
  abstract     = {In this study, topological structures of a separation bubble in a ribbed channel are identified and analyzed. Particle image velocimetry (PIV) and POD (proper orthogonal decomposition) filter are used to give the velocity vector field. The ribs obstruct the channel by 20% of its height and are arranged 9 rib heights apart. The Reynolds number is 22000 based on the bulk-mean velocity and channel height. Among a number of interesting features, a distinct Hopf bifurcation is identified. If the initial size of the limit cycle is small, a reversed Hopf bifurcation is also possible.},
  author       = {Wang, Lei and Salewski, Mirko and Sundén, Bengt},
  booktitle    = {[Host publication title missing]},
  editor       = {Hanjalic, K and Nagano, Y and Jakirlic, S},
  isbn         = {978-156700-262-1},
  language     = {eng},
  pages        = {481--484},
  publisher    = {Begell House},
  title        = {Topological structures of a separation bubble in a ribbed channel},
  year         = {2009},
}