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A Glassbead-Glycerol Model for Non-Steady-State Tile Drainage¹

ABSTRACT

The construction and use of a reduced scale model for studying the falling water table in non-steady-state drainage problems are described. A capillary fringe is accounted for in the model. Stratified soils may be simulated. It is concluded that the model can be used to obtain information which is valuable in drainage theory and design.

¹ Journal Paper No. 3874 of Iowa Agr. and Home Econ. Exp. Sta., Ames. Project No. 1003. Joint contribution from the Departments of Agronomy and Agricultural Engineering. Part of the material in this paper was presented before Div. I, Soil Science Society of America, Nov. 15, 1956, at Cincinnati, Ohio.

² Formerly Research Associate, now Assistant Horticulturist, University of California Citrus Exp. Sta., Riverside, and Professor of Soils and Physics, Iowa State University, Ames, respectively.

Received for publication May 31, 1960. Accepted for publication August 16, 1960.