Dipole-generated unsaturated flow in Gardner soils

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The Bystrov explicit analytical solution for viscous, low-Reynolds number flow in layers of variable thickness is interpreted as infiltration in a Gardner homogeneous soil obstructed by a subterranean cavity, stone, or other obstacle. Mathematically, the two-dimensional advection-dispersion equation for the Kirchhoff potential is solved by combination of a term responsible for incident unidirectional infiltration, and a term describing a dipole. Superposition results in a separatrix (a cavity or stone contour), outside of which streamlines are deflected from vertical lines, and constant potential (pressure, moisture content) lines demarcating lobe-shaped domains. The physical impedance of the obstacle causes a buildup of moisture near the leading edge and a dry zone near the trailing edge of the obstacle. The criticality conditions of the model were also tested (i.e., that the moisture content in the flow domain is less than porosity but greater than zero).

Original languageEnglish
Pages (from-to)168-174
Number of pages7
JournalVadose Zone Journal
Volume6
Issue number1
DOIs
Publication statusPublished - Feb 2007

Fingerprint

unsaturated flow
infiltration (hydrology)
moisture content
cavity
infiltration
water content
impedance
Reynolds number
arid zones
porosity
soil
advection
moisture
stone

ASJC Scopus subject areas

  • Soil Science

Cite this

Dipole-generated unsaturated flow in Gardner soils. / Kacimov, Anvar.

In: Vadose Zone Journal, Vol. 6, No. 1, 02.2007, p. 168-174.

Research output: Contribution to journalArticle

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