SSSAJ Grow Your Career with SSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Soil Sci Soc Am J 43:1061-1067 (1979)
© 1979 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Gillham, R. W.
Right arrow Articles by Heermann, D. F.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Gillham, R. W.
Right arrow Articles by Heermann, D. F.
Agricola
Right arrow Articles by Gillham, R. W.
Right arrow Articles by Heermann, D. F.

Measurement and Numerical Simulation of Hysteretic Flow in a Heterogeneous Porous Medium1

R. W. Gillham2, A. Klute3 and D. F. Heermann3

ABSTRACT

A finite difference solution of the Richards equation was tested experimentally for hysteretic flow in a nonuniform medium. The space-dependent hydraulic properties (water content-pressure head and hydraulic conductivity-water content) were determined experimentally on a laboratory column of sand and were represented in the numerical model by empirical equations.

Boundary conditions resulting in hysteretic flow were applied to both the experimental column and the numerical model and the resulting water content and pressure head profiles were compared. Agreement was excellent between the measured and computed results. An additional simulation, in which the medium was considered to be nonhysteretic, gave good agreement between the measured and computed pressure head values but resulted in substantial error in the computed water content values.

NOTES

1 Joint contribution from Colo. State Univ., and USDA-SEA, Agricultural Research, Ft. Collins, Colo. Supported in part by U.S. Dep. of Interior, OWRR, Project no. A-014-Colo., Colo. State Univ., Exp. Stn. Scientific Series Paper no. 2437.

2 Assistant Professor, Dep. of Earth Sciences, Univ. of Waterloo, Waterloo, Ontario, Canada.

3 Soil Scientist, USDA-SEA-AR and Professor of Soils, Colo. State Univ.; and Agricultural Engineer, USDA-SEA, Agricultural Research, Ft. Collins, Colo., respectively.

Received for publication November 22, 1978. Accepted for publication August 20, 1979.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1979 by the Soil Science Society of America.