About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in SSSAJ

  1. Vol. 32 No. 5, p. 607-615
     
    Received: Jan 30, 1968


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2136/sssaj1968.03615995003200050013x

Theoretical Analysis of Two-Dimensional, Transient Flow of Water in Unsaturated and Partly Unsaturated Soils1

  1. J. Rubin2

Abstract

Abstract

The Darcian flow-equation for two-dimensional, transient transfer of water in rectangular, unsaturated or partly unsaturated soil slabs was solved numerically with the aid of alternating-directions, implicit difference methods. Two alternative processes were considered: predominantly horizontal infiltration and ditch-drainage. The results obtained for the horizontal infiltration process indicate that it involves upward flow-components which are due, primarily, to a gravity-induced variation in hydraulic conductivity along the inflow face. These components may materially affect the course of infiltration, especially during its earlier stages. The drainage case results demonstrate that transient water flow within the unsaturated zone and the outflow from the seepage zone may significantly affect the progress of water-table descent and the total outflow rates.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America