Journal article
Three-dimensional analysis of infiltration from the disc infiltrometer: 1. A capillary-based theory
Water Resources Research, Vol.30(11), pp.2925-2929
1994
Abstract
The hydraulic properties of an unsaturated homogenous and isotropic soil can be obtained from the unconfined flux out of a disc infiltrometer into the soil over the depth of wetting. The disc infiltrometer is becoming increasingly popular, but methods of analysis have generally relied on the restrictive assumptions of one-dimensional flow at early times or quasi-steady state flow at large times. We provide an approximate analytical expression for three-dimensional unsteady, unconfined flow out of a disc infiltrometer, and this includes the geometric effect of the circular source but ignores gravity. This physically based solution is tested against data obtained from laboratory experiments on repacked material. The results illustrate that the difference between three-dimensional and one-dimensional flow is linear with time.
Details
- Title
- Three-dimensional analysis of infiltration from the disc infiltrometer: 1. A capillary-based theory
- Authors/Creators
- K.R.J. Smettem (Author/Creator)J.Y. Parlange (Author/Creator)P.J. Ross (Author/Creator)R. Haverkamp (Author/Creator)
- Publication Details
- Water Resources Research, Vol.30(11), pp.2925-2929
- Publisher
- American Geophysical Union
- Identifiers
- 991005545526607891
- Copyright
- © 1994 by the American Geophysical Union.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.45 Soil Science
- 3.45.879 Soil Erosion
- Web Of Science research areas
- Environmental Sciences
- Limnology
- Water Resources
- ESI research areas
- Environment/Ecology