Mean and turbulence strutures of open-channel flows with submerged vegetation

Wonjun Yang, Sung Uk Choi

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

Abstract

In this study, the mean flow and turbulent structures of the open-channel flows with the submerged vegetation was explored. For this, laboratory flume experiments are conducted with model vegetation without foliage. Wooden dowel is used for rigid vegetation, and polyethylene film is used for flexible vegetation. Other properties of model vegetation are made the same. Mean and fluctuation velocities are measured using the laser Doppler anemometer. From the measured data, the vertical profiles of mean velocity, turbulent intensity, Reynolds shear stress are obtained. The general profiles for mean velocity and turbulent intensity is suggested, and the profiles of Reynolds shear stress were investigated. The impact of stem flexibility was also investigated. It was shown that mean velocity and Reynolds shear stress can hardly distinguished from that with rigid vegetation. However, turbulent intensity profiles were affected by stem flexibility.

Original languageEnglish
Title of host publicationAdvances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS
PublisherSpringer Berlin Heidelberg
Pages429-434
Number of pages6
ISBN (Print)9783540894643
DOIs
Publication statusPublished - 2009
Event16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008 - Nanjing, China
Duration: 2008 Oct 202008 Oct 23

Publication series

NameAdvances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS

Other

Other16th Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research, APD 2008 and the 3rd IAHR International Symposium on Hydraulic Structures, ISHS 2008
CountryChina
CityNanjing
Period08/10/2008/10/23

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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  • Cite this

    Yang, W., & Choi, S. U. (2009). Mean and turbulence strutures of open-channel flows with submerged vegetation. In Advances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS (pp. 429-434). (Advances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-89465-0_75