A numerical model of a saturated-unsaturated porous flow system

Dubravka Pokrajac*

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The paper presents a numerical model of transient, saturated-unsaturated water flow through a porous medium. The model solves Richards' equation, which is assumed to present water flow in both unsaturated and saturated zones. The equation is solved by the implicit iterative finite difference method, using the over-relaxation technique. The model is tested by comparison with published laboratory experiments. The agreement between measured and computed values is very good for both infiltration and drainage experiments. The purpose of the model is the prediction of a soil-water regime either in natural conditions or under the influence of an irrigation or drainage system.

Original languageEnglish
Pages (from-to)183-190
Number of pages8
JournalWater Resources Management
Volume2
Issue number3
DOIs
Publication statusPublished - 1 Sep 1988

Keywords

  • drainage
  • irrigation
  • numerical model
  • Unsaturated flow

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

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