Article Type:
Research Article

Windward Diffusion

J. R. Philip CSIRO Laboratory for Environmental Mechanics, Canberra, Australian Capital Territory, Australia

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Print Publication:
01 Jul 1997
DOI:
https://doi.org/10.1175/1520-0450(1997)036<0974:WD>2.0.CO;2
Page(s):
974–977
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Abstract

Windward diffusion (WD) is customarily neglected in convection-diffusion studies, though some work suggests upwind diffusive flux may be significant. Analyses of internal boundary layers produced by a step change in surface concentration of a scalar with and without WD confirm that the effect of WD is indeed negligible. The analysis with WD is, however, needed if an estimate of upwind diffusive flux is required.

Corresponding author address: Dr. J. R. Philip, CSIRO Laboratory for Environmental Mechanics, GPO Box 821, Canberra, ACT 2601, Australia.

Abstract

Windward diffusion (WD) is customarily neglected in convection-diffusion studies, though some work suggests upwind diffusive flux may be significant. Analyses of internal boundary layers produced by a step change in surface concentration of a scalar with and without WD confirm that the effect of WD is indeed negligible. The analysis with WD is, however, needed if an estimate of upwind diffusive flux is required.

Corresponding author address: Dr. J. R. Philip, CSIRO Laboratory for Environmental Mechanics, GPO Box 821, Canberra, ACT 2601, Australia.

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Cover Journal of Applied Meteorology and Climatology
Journal of Applied Meteorology and Climatology

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