Determination of Resistance Due to Shrubs and Woody Vegetation

Abstract

Flume studies were conducted to determine hydraulic resistance of flexible plants that deform with turbulent flow. Both partially submerged and fully submerged plants were studied. The flexible stems and varying shapes of a plant leaf mass greatly complicate the understanding of resistance. The deformation of plant shape with flow precludes the use of constant blockage or plant density in predicting resistance. This study considers the effects on channel resistance for the variables of plant type, plant geometry, plant density, plant flexibility, and submerged and partially submerged plants. Regression equations were developed for determining the Manning's roughness coefficient.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2000
Accession Number
ADA383997

Entities

People

  • Gary E. Freeman
  • Ronald R. Copeland
  • William H. Rahmeyer

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ball Bearings
  • Birds
  • Coefficients
  • Engineering
  • Engineers
  • Equations
  • Flood Control
  • Floods
  • Flow
  • Froude Number
  • Geometry
  • Measurement
  • Resilience
  • Reynolds Number
  • Roughness
  • Sedimentation
  • Turbulent Flow

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Structural Dynamics.
  • Wetland-Land-Environmental Management.