About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in SSSAJ

  1. Vol. 45 No. 6, p. 1012-1015
     
    Received: Oct 23, 1980
    Published: Nov, 1981


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2136/sssaj1981.03615995004500060002x

The Calibration of the Richards Flow Equation for a Draining Column by Parameter Identification1

  1. D. W. Zachmann,
  2. P. C. DuChateau and
  3. A. Klute2

Abstract

Abstract

Before the Richards equation can be used to simulate the flow of moisture through a soil it is necessary to estimate the water capacity and hydraulic conductivity functions which appear as coefficients. We present four parameter identification methods and one direct method for estimating these hydraulic properties. For the sample problem considered, the parameter identification method which used cumulative discharge data to estimate water capacity and hydraulic conductivity performed the best in predicting water content as a function of depth and time during drainage.

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

Copyright © . Soil Science Society of America