PREDICTION OF THE SOIL BOUNDARY WETTING CURVE
- 1 June 1984
- journal article
- research article
- Published by Wolters Kluwer Health in Soil Science
- Vol. 137 (6), 379-390
- https://doi.org/10.1097/00010694-198406000-00001
Abstract
A previously developed model of hysteresis is formulated on a nondimensional scale using the effective saturation rather than the capillary head as the independent variable. The theoretical equations of the various hysteretic curves suggest that a universal hysteresis of unsaturated porous media prevails on the dimensionless scale. This study also proves that the common use of a primary loop instead of the main loop of hysteresis for calibrating the model is actually compatible with theory. Data of 10 soil-water hysteresis studies were used to examine the applicability of the theory. Based on the findings, this study suggests a method for predicting the soil boundary wetting curve from the measured primary loop. The computed and the measured parts of the boundary loop can be used concomitantly to calibrate Model II of Mualem (1974) in the complete domain of hysteresis. The proposed method was illustrated using the data of a sand sample.This publication has 3 references indexed in Scilit:
- A Hysteresis Model Based on an Explicit Domain‐Dependence FunctionSoil Science Society of America Journal, 1979
- Extension of the similarity hypothesis used for modeling the soil water characteristicsWater Resources Research, 1977
- MOISTURE TENSION, DIFFUSIVITY, AND CONDUCTIVITY OF A LOAM SOIL DURING WETTING AND DRYINGCanadian Journal of Soil Science, 1965