GreenAmptbenaderingen

Green-Ampt infiltration is a widely used model for predicting the infiltration of water into unsaturated soils. It is based on the work of Green and Ampt, who developed a mathematical model to describe the movement of water into a soil column. The model assumes that the soil is homogeneous and isotropic, and that the water content is uniform at any given depth. The Green-Ampt model is particularly useful for predicting infiltration rates in soils with a high water content, such as those found in agricultural fields or urban areas.

The Green-Ampt model is based on the principle of conservation of mass, which states that the rate of change of water content in a soil column is equal to the difference between the infiltration rate and the rate of water movement through the soil. The model also takes into account the capillary forces that act on the water in the soil, which can slow down the infiltration process. The Green-Ampt model has been validated through numerous field and laboratory experiments, and it has been shown to provide accurate predictions of infiltration rates in a variety of soil types.

One of the key assumptions of the Green-Ampt model is that the soil is initially at a uniform water content. This assumption may not be valid in all situations, particularly in soils with a high degree of heterogeneity or in soils that have been subjected to previous infiltration events. In such cases, more complex models may be required to accurately predict infiltration rates. Despite this limitation, the Green-Ampt model remains a valuable tool for predicting infiltration rates in a wide range of soil types and conditions.