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Shape effects in aeolian grain transport
Author(s) -
WILLETTS B. B.,
RICE M. A.,
SWAINE S. E.
Publication year - 1982
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1982.tb01803.x
Subject(s) - aeolian processes , sphericity , sorting , geology , grain size , wind tunnel , winnowing , mineralogy , geotechnical engineering , geometry , geomorphology , mechanics , mathematics , physics , algorithm , archaeology , history
Wind tunnel experiments are reported, the results of which show that grain transport rate is responsive to characteristic grain shape. It is relatively less sensitive to changes of sorting unless these involve the fraction smaller than 50μm. A cubic relationship between transport rate and velocity gradient appears to be valid only for well worked natural grains having high sphericity.