International Journal of Applied Science and Engineering
Published by Chaoyang University of Technology

Dyi-Huey Chang*

Department of Environmental Engineering and Management,  Chaoyang University of Technology, Wufeng, Taichung county 413, Taiwan, R.O.C.


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ABSTRACT


Modeling of unsaturated porous flow requires the knowledge of soil hydraulic functions. Such functions often involve multiple soil parameters that need to be estimated for different soil types. This study explores the use of a single-parameter hydraulic functions based on the linear-type K-h-y relationship applied in stochastic subsurface hydrology [1-3]. We first estimate the parameters of above linear-type K-h-y relationship through widely used soil hydraulic functions. Then we explore the possibilities and implications of expressing those parameters with a single soil parameter and few constants. Our results suggest that those constants are not very sensitive to the variation of soil parameters and a single-parameter soil hydraulic functions yield reasonably accurate representation. Preliminary validation of the proposed model using observed data yields promising results.


Keywords: soil hydraulic functions; soil properties; soil moisture; soil parameters.


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REFERENCES


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ARTICLE INFORMATION




Accepted: 2003-02-26
Available Online: 2003-09-01


Cite this article:

Chang, D.-H. 2003. A One-parameter approximation for soil hydraulic functions, International Journal of Applied Science and Engineering, 1. 123–136.https://doi.org/10.6703/IJASE.2003.1(2).123