Accession Number:

AD0626606

Title:

ON THE COLLISIONS OF VERY SMALL CLOUD DROPS,

Descriptive Note:

Corporate Author:

RAND CORP SANTA MONICA CALIF

Personal Author(s):

Report Date:

1966-01-01

Pagination or Media Count:

13.0

Abstract:

Conclusions Some of the hydrodynamic force expressions used by Hocking The collision efficiency of small drops, Quart. J. Roy. Met. Soc., 85, 44-50 1959 are incorrect for close droplet separations. His conclusions should therefore be regarded with suspicion. Preliminary results based on an improved Stokesian hydrodynamic theory show no evidence for the 19-micron collision efficiency cut-off. The Stokes approximation is inadequate at Reynolds numbers as small as 0.25 for nearly equal spheres. Its range of validity in the twosphere hydrodynamic problem should be investigated. Author

Subject Categories:

  • Atmospheric Physics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE