INTEGRAL ESTIMATES OF THE SORPTIVITY

被引：10
|
作者：
LOCKINGTON, D
PARSLOW, J
PARLANGE, JY
机构：
[1] CORNELL UNIV,ITHACA,NY 14853
[2] CSIRO,DIV FISHERIES & OCEANOG,HOBART,AUSTRALIA
来源：
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1988年 / 52卷 / 04期
关键词：
Diffusion - Flow of Water--Porous Materials - Mathematical Techniques--Integral Equations;
D O I：
10.2136/sssaj1988.03615995005200040001x
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
The second-order accuracy of several well-known integral estimates of the sorptivity is shown to be limited to a particular class of rapidly varying diffusivities. This class includes the exponential and power-law diffusivities commonly used in the description of soil-water flow. The derivation of the sorptivity estimates and the argument for second-order accuracy are clarified and a new formula for the sorptivity is derived that applies to a wider class of diffusivities.
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页码：903 / 908
页数：6
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