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Gowree, E. R. and Atkin, C. J. 
ORCID: https://orcid.org/0000-0003-2529-1978
(2016)
Staggered three-dimensional cavities as a possible method for skin friction drag reduction.
In:
30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016.
30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016
.
International Council of the Aeronautical Sciences, KOR.
ISBN 9783932182853
Abstract
The effect of three-dimensional staggered circular cavities on a zero-pressure gradient incompressible turbulent boundary layer was studied. Two key parameters were varied, being the ratio of the diameter, d, to the depth, h, of the cavity, d/h and the Reynolds number based on the diameter of the cavity, Rd. Velocity profile measurements showed that for the cases of d/h>1 an increase in skin friction drag was experienced with respect to a smooth surface, but for d/h ≤ 1 the drag increment was almost negligible and in some cases it was lower than that of a smooth surface by up to 10%. Measurements along the spanwise plane showed the presence of organised transverse velocity components which bear some resemblance with the flow over riblets. The skin friction drag appears to be a strong function of Rd, where for Rd >5500 a drag increment is experienced which could potentially be due to shear layer breakdown and more production of turbulence.
| Item Type: | Book Section |
|---|---|
| Uncontrolled Keywords: | aerospace engineering,control and systems engineering,electrical and electronic engineering,materials science(all) ,/dk/atira/pure/subjectarea/asjc/2200/2202 |
| Faculty \ School: | |
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| Depositing User: | LivePure Connector |
| Date Deposited: | 19 Jul 2022 19:30 |
| Last Modified: | 22 Oct 2022 23:57 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/86666 |
| DOI: |
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