Saltation threshold reduction due to the electrostatic agglomeration of fine particles

Details Saltation threshold reduction due to the electrostatic agglomeration of fine particles Saltation threshold reduction due to the electrostatic agglomeration of fine particles

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sdum.nasa...38l&link_type=abstract

In NASA. Ames Research Center, Sand and Dust on Mars p 38 (SEE N91-27057 18-91)

Physics

Agglomeration, Dust, Electrostatics, Mars Environment, Sands, Sediment Transport, Wind Effects, Wind Tunnel Tests, Ground Wind, Mars Surface, Powder (Particles), Wind Velocity

Scientific paper

Particles between 80 and 110 microns in diameter are the most easily moved by the wind. As the particle size decreases below 60 microns, they are increasingly more difficult to move by surface winds, and a number of experiments were performed in an attempt to reduce the required wind velocity. These include: (1) the bombardment of a bed of fine particles by particles near the optimum size, the larger particles kicking the fine particles into the windstream where they are entrained; and (2) the electrostatic agglomeration of fine particles into sizes more easily saltated. The results of these experiments are discussed.

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