dc.contributor.author |
P. Bradshaw |
en_US |
dc.contributor.author |
N. Gregory |
en_US |
dc.date.accessioned |
2014-10-21T15:55:06Z |
|
dc.date.available |
2014-10-21T15:55:06Z |
|
dc.date.issued |
1959 |
en_US |
dc.identifier.other |
ARC/R&M-3202 |
en_US |
dc.identifier.uri |
https://reports.aerade.cranfield.ac.uk/handle/1826.2/3773 |
|
dc.description.abstract |
Observations made in the viscous sub-layer of turbulent shear flows with small surface pitot-tubes and hot wires show that such instruments give accurate values of boundaryiayer skin friction, at least in zero pressure gradient, but only when calibrated in turbulent flow: calibration in laminar flow gives incorrect results by about 10 per cent with u, d/v = 2. It is further shown that the region of universality of turbulent velocity profile is confined to the viscous sub-layer, and an upper limit u, d/v = 30 is suggested for the height d of a flat surface tube if reasonable accuracy is to be obtained in skin-friction measurements. |
en_US |
dc.relation.ispartofseries |
Aeronautical Research Council Reports & Memoranda |
en_US |
dc.title |
The determination of local turbulent skin friction from observations in the viscous sub-layer |
en_US |