Lodging velocity for an emergent aquatic plant in open channels

Guohong Duan, Brian Barkdoll, Richard French

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Vegetation can impede flow in open channels. The control of vegetation by hydraulic means is a nonchemical approach that can be attractive. To control the vegetation, the calculation of the lodging velocity (velocity at which the plant stem breaks) is an important parameter. A theoretical method is developed here for a single stem fully exposed to the flow, assuming that the drag force is the sole failure-inducing force. Results are compared to field results and the trends analyzed. The comparison and field visual observations may indicate that vortex shedding (not accounted for in the model) could be the dominant failure-inducing force, and not the drag force, as assumed.

Original languageEnglish (US)
Pages (from-to)1015-1020
Number of pages6
JournalJournal of Hydraulic Engineering
Volume132
Issue number10
DOIs
Publication statusPublished - Oct 2006

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Keywords

  • Aquatic plants
  • Composite materials
  • Mechanics
  • Open channel flow
  • Vegetation
  • Vortex shedding
  • Water supply

ASJC Scopus subject areas

  • Water Science and Technology
  • Civil and Structural Engineering
  • Mechanical Engineering

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