Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Dynamic Simulation of Vertical Infiltration into Unsaturated Soils.
Author Bhuiya, S. I. ; Hile, E. A. ; van Bave, C. H. M. ; Asto, A. R. ;
CORP Author Texas A and M Univ., College Station. Water Resources Inst.
Year Published 1971
Report Number OWRR-B-080-TEX; 01782,; B-080-TEX(2)
Stock Number PB-204 709
Additional Subjects ( Soils ; Moisture content) ; ( Fluid infiltration ; Soils) ; Computerized simulation ; Computer programming ; Stratification ; Periodic variations ; Conservation ; Clays ; Loams ; Statistical analysis ; Numerical analysis ; Runge-Kutta method ; Unsaturated soil
Library Call Number Additional Info Location Last
NTIS  PB-204 709 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 24p
A dynamic simulation language was used to develop a computer model which simulated vertical infiltration of water into unsaturated soil. The modeling concept consisted primarily of dividing the soil into a large number of layers of equal thickness. The net flux of water through each layer at any particular time was established using the principles of conservation of mass and Darcy's law. The ensuing water content was then calculated by integrating the net flux utilizing the fourth order Runge-Kutta method with suitable error criteria. The cumulative infiltration was calculated from the instantaneous infiltration rates using the same integration technique. Water content profiles with time were obtained for three different soils: Yolo light clay, Adelanto loam and Pachappa loam. The infiltration rate and cumulative amount were also calculated with time giving a complete picture of the water intake characteristics of the soil.