A Simplified Model for Solute Movement Through Soils1
- A. Amoozegar-Fard,
- A. W. Warrick and
- W. H. Fuller2
Solute movement through soil can be described by a variety of mathematical models whose unknown parameters (often three or more) must be estimated accurately and efficiently. In many cases, the movement of an ion can be described by a breakthrough curve at a given depth. Such a curve resulting from a step input of solute is often of sigmoidal shape. In this paper, an error function model that fits such a breakthrough curve is presented with two unknown parameters. The parameters can be estimated explicitly by a small calculator. Although chosen by least square differences, the parameters can be interpreted on the basis of sound physical principles.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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