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.

引用

页码：903 / 908

页数：6

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