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This article in SSSAJ

  1. Vol. 46 No. 1, p. 14-19
    Received: Apr 20, 1981
    Accepted: Aug 15, 1981

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A Numerical Study of Raindrop Impact Phenomena: The Rigid Case1

  1. C. Huang,
  2. J. M. Bradford and
  3. J. H. Cushman2



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.

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