Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Numerical simulations of infiltration into model soils containing artificial macropores are performed for heads of -25 cm, 0 cm and 10 cm in preparation for a series of physical experiments on laboratory soil models. Short-term results indicate macropore exclusion at negative heads and dominance for positive heads. Crossflow may however pull enough water from a narrow macropore to make the front locally deeper in the matrix. Long-term results suggest the existence of a traveling wave asymptote. The scales of short- and long-term behaviors are identified as 10 seconds -- 20 cm and 10 minutes -- 100 cm, respectively. These results will be used to refine the design of the laboratory apparatus and procedures prior to performing the physical experiments.