Saltation and Suspension of Particulate Matter in Air

Abstract

A model of eolian sediment transport has been constructed, a special case of which is that corresponding to sand-sized mineral grains subjected to moderate winds: saltation. The model consists of four compartments corresponding to aerodynamic entrainment, grain trajectories, grain-bed impacts, and momentum extraction from the wind. Each sub-model encapsulates the physics of the process, and is constrained where necessary by experimental data. When combined, the full model allows simulation of eolian saltation from inception by aerodynamic entrainment to steady state. Keywords: Sand, Saltation, Aeolian, Suspension, Turbulence, Friction velocity, Geology, Particulate matter in air, Simulations.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1990
Accession Number
ADA222993

Entities

People

  • P. H. Haff
  • R. S. Anderson

Organizations

  • Duke University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Science
  • Computer Simulations
  • Differential Equations
  • Equations
  • Fluid Mechanics
  • Geometric Forms
  • Geometry
  • Grain Size
  • Lines (Geometry)
  • Measurement
  • Mechanics
  • Military Research
  • Particulate Matter
  • Probability Distributions
  • Two Dimensional
  • Wind Velocity

Readers

  • Coastal Oceanography
  • Geotechnical Engineering.
  • Quantum Chemistry