A Comparative Study Of Soil Column Experiments

And Inverse Parameter Optimization Predicting

The Unsaturated Hydraulic Functions

G. Nutzmann; H. Moser; K. Joswig

doi:10.2495/WP950071

A Comparative Study Of Soil Column Experiments And Inverse Parameter Optimization Predicting The Unsaturated Hydraulic Functions

Price

Free (open access)

Transaction

WIT Transactions on Ecology and the Environment

Volume

Pages

Published

1995

Size

606 kb

Paper DOI

10.2495/WP950071

WIT Press

Author(s)

G. Nutzmann, H. Moser & K. Joswig

Abstract

Several experimental methods are employed to determine effective hydraulic functions of an unsaturated homogeneous sand. Classical one-step outflow and evaporation experiments were carried out on small soil columns, and a modified one-step outflow method was employed on a column with 150 cm length and a saturated-unsaturated water flow. Hydraulic properties of the quarz sand are assumed to be represented by van Genuchten's closed-form expressions, the parameters a and n given by this expressions are evaluated with an inverse optimization procedure. Only the large column experiment results allow to draw conclusions from parame

Keywords

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Code

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