PARAMETER CONSTRAINTS ON CLOSED-FORM SOILWATER RELATIONSHIPS

被引:149
作者
FUENTES, C
HAVERKAMP, R
PARLANGE, JY
机构
[1] CORNELL UNIV, DEPT AGR & BIOL ENGN, ITHACA, NY 14853 USA
[2] INST NATL POLYTECH GRENOBLE, F-38041 GRENOBLE, FRANCE
关键词
D O I
10.1016/0022-1694(92)90032-Q
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The constraints on the different fitting parameters used in the water retention equation, h(theta), and hydraulic conductivity, K(theta), are analyzed using the infiltration equation as a testing tool. The following characteristic equations are considered: those of Gardner; Brooks and Corey; Brutsaert; Van Genuchten subject to both Mualem's and Burdine's condition; Van Genuchten combined with Brooks and Corey; and Fujita. It is shown that most combinations of h(theta) and K(theta) or K(h) break down, when tested over the large range of soil types encountered in field situations. For clay soils, especially, the best-fit parameter values often become inconsistent with the infiltration theory. The best combination is the Van Genuchten equation for h(theta) with the Burdine condition m = 1 - 2/n and the Brooks and Corey equation for K(theta). This combination satisfies the infiltration condition for all soil types, even when applied to the two extreme cases used by Green and Ampt and Talsma and Parlange. The interdependence of h(theta) and K(theta) parameters is discussed.
引用
收藏
页码:117 / 142
页数:26
相关论文
共 44 条
[1]   IMPROVED FORM OF SOIL-WATER DIFFUSIVITY FUNCTION [J].
AHUJA, LR ;
SWARTZENDRUBER, D .
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1972, 36 (01) :9-+
[2]  
AVERYANOV SF, 1950, PERMEABILITY SUBSURF, V7
[3]  
BEUVING J, 1984, 10 VOCHT DOORLATENDH
[4]  
Boltzmann L., 1894, ANN PHYS-NEW YORK, V53, P959
[6]  
Bouwer H., 1964, J HYDRAUL DIV, V90, P121, DOI [10.1061/JYCEAJ.0001098, DOI 10.1061/JYCEAJ.0001098]
[7]   CONSTANT RATE RAINFALL INFILTRATION - A VERSATILE NONLINEAR MODEL .1. ANALYTIC SOLUTION [J].
BROADBRIDGE, P ;
WHITE, I .
WATER RESOURCES RESEARCH, 1988, 24 (01) :145-154
[8]  
BROOKS RH, 1964, HYDROL PAPER, V3
[9]   PROBABILITY LAWS FOR PORE-SIZE DISTRIBUTIONS [J].
BRUTSAERT, W .
SOIL SCIENCE, 1966, 101 (02) :85-+
[10]   MORE ON AN APPROXIMATE SOLUTION FOR NONLINEAR DIFFUSION [J].
BRUTSAERT, W .
WATER RESOURCES RESEARCH, 1974, 10 (06) :1251-1252