Submitted to: ARS Workshop on Real World Infiltration
Publication Type: Proceedings
Publication Acceptance Date: July 25, 1996
Publication Date: N/A
Technical Abstract: Mechanistic infiltration models exist, but flow equations appropriate for the soil matrix do not apply for the macropore domain. This review discusses several macropore flow models. Some of the models emphasize macropore geometry whereas other models use a series of equations for the macropore domain. The models also need to include analysis of the exchange between the macropore and matrix domains. The recommendations are: 1) select a model (or models) with the minimum degree of complexity required for a specific situation to reduce the number of unmeasurable parameters; 2) complex models should provide a range of values for those parameters that cannot be easily measured; 3) sensitivity analyses are essential to determine which parameters need to be measured or carefully estimated; and 4) comparative studies are needed to evaluate these models under a variety of field conditions.