PIV MEASUREMENTS OF TURBULENT FLOW IN A CHANNEL WITH SOLID OR PERFORATED RIBS
(2010) Proceedings of 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels- Abstract
- Particle image velocimetry measurements are performed in
a channel with periodic ribs on one wall. We investigate the flow
around two different rib configurations: solid and perforated ribs
with a slit. The ribs obstruct the channel by 20% of its height
and are arranged 10 rib heights apart. For the perforated ribs,
the slit height is 20% of the rib height, and the open-area ratio
is 16%. We discuss the flow in terms of mean velocity, streamlines,
vorticity, turbulence intensity, and Reynolds shear stress.
We find that the recirculation bubbles after the perforated ribs
are significantly smaller than those after the solid ribs. The reattachment
length... (More) - Particle image velocimetry measurements are performed in
a channel with periodic ribs on one wall. We investigate the flow
around two different rib configurations: solid and perforated ribs
with a slit. The ribs obstruct the channel by 20% of its height
and are arranged 10 rib heights apart. For the perforated ribs,
the slit height is 20% of the rib height, and the open-area ratio
is 16%. We discuss the flow in terms of mean velocity, streamlines,
vorticity, turbulence intensity, and Reynolds shear stress.
We find that the recirculation bubbles after the perforated ribs
are significantly smaller than those after the solid ribs. The reattachment
length after perforated ribs is smaller by about 45%
compared with the solid ribs. In addition, the Reynolds shear
stresses around the perforated ribs are significantly smaller than
in the solid rib case, leading to a reduction of the pressure loss
in the perforated rib case. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1604083
- author
- Wang, Lei LU ; Salewski, Mirko LU and Sundén, Bengt LU
- organization
- publishing date
- 2010
- type
- Contribution to conference
- publication status
- published
- subject
- conference name
- Proceedings of 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels
- conference location
- Montreal, Quebec, Canada
- conference dates
- 2010-07-01 - 2010-08-05
- external identifiers
-
- scopus:80054979578
- language
- English
- LU publication?
- yes
- id
- f44a648d-cf1e-4032-b600-cfc792f95e16 (old id 1604083)
- date added to LUP
- 2016-04-04 13:36:14
- date last changed
- 2022-01-30 00:35:10
@misc{f44a648d-cf1e-4032-b600-cfc792f95e16,
abstract = {{Particle image velocimetry measurements are performed in<br/><br>
a channel with periodic ribs on one wall. We investigate the flow<br/><br>
around two different rib configurations: solid and perforated ribs<br/><br>
with a slit. The ribs obstruct the channel by 20% of its height<br/><br>
and are arranged 10 rib heights apart. For the perforated ribs,<br/><br>
the slit height is 20% of the rib height, and the open-area ratio<br/><br>
is 16%. We discuss the flow in terms of mean velocity, streamlines,<br/><br>
vorticity, turbulence intensity, and Reynolds shear stress.<br/><br>
We find that the recirculation bubbles after the perforated ribs<br/><br>
are significantly smaller than those after the solid ribs. The reattachment<br/><br>
length after perforated ribs is smaller by about 45%<br/><br>
compared with the solid ribs. In addition, the Reynolds shear<br/><br>
stresses around the perforated ribs are significantly smaller than<br/><br>
in the solid rib case, leading to a reduction of the pressure loss<br/><br>
in the perforated rib case.}},
author = {{Wang, Lei and Salewski, Mirko and Sundén, Bengt}},
language = {{eng}},
title = {{PIV MEASUREMENTS OF TURBULENT FLOW IN A CHANNEL WITH SOLID OR PERFORATED RIBS}},
year = {{2010}},
}