| dc.contributor.author |
Cheng, Nian-Sheng. |
| dc.contributor.author |
Law, Adrian Wing-Keung. |
| dc.date.accessioned |
2012-03-20T06:05:53Z |
| dc.date.available |
2012-03-20T06:05:53Z |
| dc.date.copyright |
2003 |
| dc.date.issued |
2012-03-20 |
| dc.identifier.citation |
Cheng, N. S., & Law, A. W. K. (2003). Fluctuations of turbulent bed shear stress. Journal of Engineering Mechanics, 129(1), 126-130. |
| dc.identifier.issn |
0733-9399 |
| dc.identifier.uri |
http://hdl.handle.net/10220/7642 |
| dc.description.abstract |
With the assumption that the bed shear stress fluctuates in a lognormal fashion, the probability density function PDF of the
standardized bed shear stress is derived as a function of the relative shear stress intensity. The PDF is more skewed with larger relative
intensities, but approaches a Gaussian function when the relative intensity is small. The computed PDF agrees well with the reported
experimental data for flows over a smooth boundary. The higher-order moments of the bed shear stress, skewness, and kurtosis, are shown
analytically to be also dependent on the relative intensity. The theoretical dependencies are then compared to a number of measurements
available in the literature. The Reynolds number effect on the relative intensity is also discussed. |
| dc.format.extent |
15 p. |
| dc.language.iso |
en |
| dc.relation.ispartofseries |
Journal of engineering mechanics |
| dc.rights |
© 2003 ASCE. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Engineering Mechanics, American Society of Civil Engineers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1061/(ASCE)0733-9399(2003)129:1(126)]. |
| dc.subject |
DRNTU::Engineering::Civil engineering::Water resources. |
| dc.subject |
DRNTU::Engineering::Mechanical engineering::Fluid mechanics. |
| dc.title |
Fluctuations of turbulent bed shear stress. |
| dc.type |
Journal Article |
| dc.contributor.school |
School of Civil and Environmental Engineering |
| dc.identifier.doi |
http://dx.doi.org/10.1061/(ASCE)0733-9399(2003)129:1(126) |
| dc.description.version |
Accepted version |
