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This article in SSSAJ

  1. Vol. 42 No. 1, p. 3-6
     
    Received: Feb 22, 1977
    Accepted: Sept 13, 1977


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doi:10.2136/sssaj1978.03615995004200010001x

Linear and Nonlinear Models of Infiltration From a Point Source1

  1. J. Ben-Asher,
  2. D. O. Lomen and
  3. A. W. Warrick2

Abstract

Abstract

Numerical and analytical solutions for water flow from a point source are compared. The numerical solution was for the nonlinear moisture flow equation and the analytical solution for the corresponding linearized form. For cyclic conditions, results were approximately the same with regard to range in values between the wettest and driest values. However, the numerical results show a faster response both for wetting and drying. Computational times required of the analytical solution were of the order of 1/20 to 1/200th of that required for the finite difference solutions.

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