Accession Number:

ADA222993

Title:

Saltation and Suspension of Particulate Matter in Air

Descriptive Note:

Final rept. 16 Apr-15 Dec 1989

Corporate Author:

DUKE UNIV DURHAM NC

Personal Author(s):

Report Date:

1990-04-01

Pagination or Media Count:

40.0

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.

Subject Categories:

  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE