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@inproceedings{Saeed:2016:10.2514/6.2016-2065,
author = {Saeed, TI and Mughal, MS and Morrison, JF},
doi = {10.2514/6.2016-2065},
publisher = {American Institute of Aeronautics and Astronautics},
title = {The Interaction of a Swept-Wing Boundary Layer with Surface Excrescences},
url = {http://dx.doi.org/10.2514/6.2016-2065},
year = {2016}
}

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TY  - CPAPER
AB  - The influence of steps and gaps on swept-wing crossflow development is an emergingarea of interest. An experiment is performed on a 40swept-wing model in a facility witha turbulence level of 0.10%. Periodic discrete roughness elements are spaced at the criticalcrossflow wavelength and used to excite the crossflow disturbance. The subsequent interactionwith a two-dimensional roughness strip of various height and chordwise location isinvestigated. Naphthalene flow visualisation is used to help understand the global transitionfeatures, whilst detailed boundary layer measurements are conducted using hot-wireanemometry. Excrescences located closest to the neutral point are seen to have the biggestinfluence on stationary-crossflow disturbance amplitude. There appears to be a thresholdheight below which the excrescence has no significant influence on the boundary layer development.Excrescences located further downstream appear to generate greater unsteadinessin the boundary layer for a given excrescence height, leading to earlier transition.
AU  - Saeed,TI
AU  - Mughal,MS
AU  - Morrison,JF
DO  - 10.2514/6.2016-2065
PB  - American Institute of Aeronautics and Astronautics
PY  - 2016///
TI  - The Interaction of a Swept-Wing Boundary Layer with Surface Excrescences
UR  - http://dx.doi.org/10.2514/6.2016-2065
ER  -

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