Modeling water flow in two- and three-dimensional applications. I. General theory for non-swelling and swelling soils

Richards, B.G. and Smettem, K.R.J.ORCID: 0000-0003-2650-4429 (1992) Modeling water flow in two- and three-dimensional applications. I. General theory for non-swelling and swelling soils. Transactions of the ASAE, 35 (5). pp. 1497-1504.

Abstract

A series of modeling procedures and program modules are discussed, which individually or combined can model most of the physical mechanisms in soils, that can be defined in a quantitative manner. The application of these techniques to modeling water flow through soils is demonstrated. The water flow can be simple flow, e.g., as described by the Richards' equation, or coupled interactively with salt or thermal flow and changing soil stresses and strains. Validation of the model against previous published solutions for simple linear problems has indicated that the modeling techniques discussed in this article can have a similar mathematical accuracy. A subsequent article will describe in more detail how these modeling techniques can be applied to more practical problems, where heterogeneity, non-linearity, hysteresis, and time dependency are experienced in field situations.

Item Type:	Journal Article
Publisher:	American Society of Agricultural and Biological Engineers
URI:	http://researchrepository.murdoch.edu.au/id/eprint/37920

Item Control Page