| dc.contributor.author |
Cheng, Nian-Sheng. |
| dc.contributor.author |
Sumer, B. Mutlu. |
| dc.contributor.author |
Fredsøe, Jørgen. |
| dc.date.accessioned |
2012-03-20T06:18:24Z |
| dc.date.available |
2012-03-20T06:18:24Z |
| dc.date.copyright |
2003 |
| dc.date.issued |
2012-03-20 |
| dc.identifier.citation |
Cheng, N. S., Sumer, B. M., & Fredsøe, J. (2003). Investigation of bed shear stresses subject to external turbulence. International Journal of Heat and Fluid Flow, 24(6), 816-824. |
| dc.identifier.issn |
0142-727X |
| dc.identifier.uri |
http://hdl.handle.net/10220/7643 |
| dc.description.abstract |
The fluctuating bed shear stress has largely been investigated only for uniform channel flows and boundary layers. In practical
engineering, the flow conditions are often modified due to the presence of various hydraulic structures. To what extent the modification
affects the known characteristics of the bed shear stress is not clear. This study presents experimental results of the bed shear
stress fluctuations, which are obviously subjected to external turbulence generated by superimposing artificial structures in the open
channel flows. The statistical analysis of the measurements shows that the probability density function of the bed shear stress can be
described by the lognormal function. Some associated relations concerning higher-order moments, skewness and kurtosis, which are
derived from the lognormal function, are further compared with the experimental data. Physical implication of the skewed probability
density distribution is finally discussed. |
| dc.format.extent |
32 p. |
| dc.language.iso |
en |
| dc.relation.ispartofseries |
International journal of heat and fluid flow |
| dc.rights |
© 2003 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by International Journal of Heat and Fluid Flow, Elsevier. 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/10.1016/S0142-727X(03)00088-2]. |
| dc.subject |
DRNTU::Engineering::Civil engineering::Water resources. |
| dc.title |
Investigation of bed shear stresses subject to external turbulence. |
| dc.type |
Journal Article |
| dc.contributor.school |
School of Civil and Environmental Engineering |
| dc.identifier.doi |
http://dx.doi.org/10.1016/S0142-727X(03)00088-2 |
| dc.description.version |
Accepted version |
