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A Numerical Study of Raindrop Impact Phenomena: The Rigid Case
Author(s) -
Huang C.,
Bradford J. M.,
Cushman J. H.
Publication year - 1982
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1982.03615995004600010003x
Subject(s) - shearing (physics) , mechanics , drop (telecommunication) , geotechnical engineering , pressure drop , computer simulation , impact pressure , materials science , environmental science , geology , physics , engineering , telecommunications
The Marker and Cell (MAC) numerical technique was used to examine the raindrop impact phenomenon. This experiment simulated the impact of a spherical drop on a rigid surface. Results indicated that the impact pressures were neither uniform nor constant, with extremely high values at the very instant of impact and diminishing to about five times the steady‐state stagnation pressure after 5 µsec. The maximum pressure was at the contact circumference. The jetting velocity at the rigid surface was twice the impact velocity. The results implied that three critical factors important in defining resistance against raindrop impact were (i) soil deformation characteristics, (ii) soil shearing strength, and (iii) surface microrelief.