Resistance Due to Vegetation

Abstract

Drag is generated when a fluid moves through vegetation. The drag creates velocity gradients and eddies that cause momentum losses. These losses are significant for a wide range of flow conditions, and existing techniques for the prediction of resistance do not take these into account, leading to underpredictions of resistance. Concepts of drag were employed to formulate two new resistance relations for cases when dense vegetation is present in the floodway.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2000
Accession Number
ADA378313

Entities

People

  • Craig J. Fischenich

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atmospheric Sciences
  • Boundaries
  • Boundary Layer
  • Channel Flow
  • Coefficients
  • Diffusion Coefficient
  • Drag
  • Equations
  • Friction
  • Linear Momentum
  • Momentum
  • Particle Size
  • Resistance
  • Reynolds Number
  • Roughness
  • Surface Roughness
  • Turbulent Mixing

Readers

  • Fluid Dynamics.
  • Marine Hydrodynamics
  • Riverine Ecology