Comparison of mean flow and turbulence around experimental spur dike

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

An acoustic Doppler velocimeter was used to measure flow and turbulence around an experimental spur dike in a flat and a scoured bed. Differences of mean velocity, turbulent intensity and Reynolds stresses between these two flow fields were compared and analyzed. Upon the formation of scour hole, mean flow velocities in the downstream and lateral directions were reduced, but increased in the vertical direction. The turbulence intensities (u' and v') are much larger, and the vertical component (w') is smaller than that in the flat bed. Bed shear stresses determined from near-bed Reynolds stresses in the scoured bed were smaller than that in the flat bed. These results indicated that local scour has not only significantly reduced bed shear but also contributed to the increase of turbulence intensities in the scouring zone.

Original languageEnglish (US)
Title of host publicationProceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009
Subtitle of host publicationGreat Rivers
Pages2977-2986
Number of pages10
DOIs
StatePublished - Oct 26 2009
EventWorld Environmental and Water Resources Congress 2009: Great Rivers - Kansas City, MO, United States
Duration: May 17 2009May 21 2009

Publication series

NameProceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
Volume342

Other

OtherWorld Environmental and Water Resources Congress 2009: Great Rivers
CountryUnited States
CityKansas City, MO
Period5/17/095/21/09

ASJC Scopus subject areas

  • Environmental Science(all)

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  • Cite this

    Duan, J. G., & He, L. (2009). Comparison of mean flow and turbulence around experimental spur dike. In Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers (pp. 2977-2986). (Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers; Vol. 342). https://doi.org/10.1061/41036(342)302