Dispersion over multiscale rough patches
Dispersion over multiscale rough patches
In this work, we experimentally investigate the effect of a multiscale patch of roughness on the dispersion of a passive scalar near the ground. Passive fluorescent dye is released from a ground level point source upstream of the patch in a boundary layer that is naturally developing in a water tunnel. Planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) are used to carry out measurements of concentration and velocity in the domain downstream of the point source. The spread of the mean concentration distributions for several different patches are compared with the smooth wall case to investigate the effect of patch solidity. These effects are then related to measurements of the internal boundary layer of the patch’s wake.
Nicolai, Claudia
8bdc34da-efe2-4dd0-b3bc-ece3bbddebff
Gudaitis, Mantas
6257dd83-b079-4021-88b5-48eda9821f0b
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
2019
Nicolai, Claudia
8bdc34da-efe2-4dd0-b3bc-ece3bbddebff
Gudaitis, Mantas
6257dd83-b079-4021-88b5-48eda9821f0b
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
Nicolai, Claudia, Gudaitis, Mantas and Vanderwel, Christina
(2019)
Dispersion over multiscale rough patches.
11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019, , Southampton, United Kingdom.
30 Jul - 02 Aug 2019.
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this work, we experimentally investigate the effect of a multiscale patch of roughness on the dispersion of a passive scalar near the ground. Passive fluorescent dye is released from a ground level point source upstream of the patch in a boundary layer that is naturally developing in a water tunnel. Planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) are used to carry out measurements of concentration and velocity in the domain downstream of the point source. The spread of the mean concentration distributions for several different patches are compared with the smooth wall case to investigate the effect of patch solidity. These effects are then related to measurements of the internal boundary layer of the patch’s wake.
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Published date: 2019
Venue - Dates:
11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019, , Southampton, United Kingdom, 2019-07-30 - 2019-08-02
Identifiers
Local EPrints ID: 491630
URI: http://eprints.soton.ac.uk/id/eprint/491630
PURE UUID: 3c136e5c-9709-43c4-99ae-c17ff6c36447
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Date deposited: 03 Jul 2024 09:09
Last modified: 11 Jul 2024 01:53
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Contributors
Author:
Claudia Nicolai
Author:
Mantas Gudaitis
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