Microgravity studies of aggregation in particulate clouds

Details Microgravity studies of aggregation in particulate clouds Microgravity studies of aggregation in particulate clouds

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3211202m&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 11, CiteID L11202

Physics

6

Planetary Sciences: Solid Surface Planets: Origin And Evolution, Volcanology: Explosive Volcanism, Volcanology: Volcanic Hazards And Risks, General Or Miscellaneous: Techniques Applicable In Three Or More Fields

Scientific paper

Aggregation in clouds of submillimeter quartz and volcanic ash particles was studied in microgravity. Particle clouds generated by pulses of air immediately formed electrostatic filamentary aggregates upon cessation of air turbulence. Manual agitation of experiment chambers produced cm-size loose grain clusters which voraciously scavenged free-floating material in their vicinity. A dipole model accounts for these observations. Experimental results have ramifications for the behavior of natural cloud systems and primary accretion of solids in the early solar nebula.

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