Please use this identifier to cite or link to this item: https://doi.org/10.1007/s003480100304
DC FieldValue
dc.titleNear-wall hot-wire measurements. Part II: Turbulence time scale, convective velocity and spectra in the viscous sublayer
dc.contributor.authorKhoo, B.C.
dc.contributor.authorChew, Y.T.
dc.contributor.authorTeo, C.J.
dc.date.accessioned2014-10-07T09:08:28Z
dc.date.available2014-10-07T09:08:28Z
dc.date.issued2001-11
dc.identifier.citationKhoo, B.C., Chew, Y.T., Teo, C.J. (2001-11). Near-wall hot-wire measurements. Part II: Turbulence time scale, convective velocity and spectra in the viscous sublayer. Experiments in Fluids 31 (5) : 494-505. ScholarBank@NUS Repository. https://doi.org/10.1007/s003480100304
dc.identifier.issn07234864
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/85477
dc.description.abstractThis work continues the studies of Khoo et al. (Exp. Fluids 29: 448-460, 2001), where experiments were performed in turbulent-channel and flat-plate boundary-layer flows using near-wall hot-wire probes. The probability density function (pdf) of the wall-shear stress and streamwise velocity fluctuations in the viscous sublayer, buffer region and beyond were compared and analyzed. The convective velocity Uc of the streamwise velocity fluctuations in the very near-wall region was obtained using a two-point correlation technique. It was found that in the viscous sublayer, Uc is approximately constant at 13uτ and 15uτ, respectively, for the channel and boundary-layer flows. Spectra data for the viscous sublayer are presented for the first time, and the normalized spectral plots for different flow conditions collapse at high frequencies or wavenumbers, thus indicating the possible presence of small-scale universality at different Reynolds numbers. The integral time scale corresponding to the streamwise velocity fluctuations in the viscous sublayer is also presented.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/s003480100304
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1007/s003480100304
dc.description.sourcetitleExperiments in Fluids
dc.description.volume31
dc.description.issue5
dc.description.page494-505
dc.description.codenEXFLD
dc.identifier.isiut000172417700004
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

15
checked on Nov 27, 2020

WEB OF SCIENCETM
Citations

14
checked on Nov 27, 2020

Page view(s)

68
checked on Nov 29, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.