A Formulation for Scanning Soil-water Characteristic Curves

Authors : Melih Birhan Kenanoğlu, Nabi Kartal TOKER

Pages : 901-906

Doi:10.2339/politeknik.389619

View : 30 | Download : 12

Publication Date : 2018-12-01

Article Type : Research Paper

Abstract :The hysteretic nature of soil water characteristic curve insert ignore into journalissuearticles values(SWCC); is captured assuming the virgin drying and virgin wetting insert ignore into journalissuearticles values(a.k.a. imbibition); curves; which can be obtained from experiments or various fitting equations in the literature, bound all possible values during transition from one regime to the other. The scanning curves insert ignore into journalissuearticles values(transitions between virgin wetting and drying SWCC); are modelled by using geometry-based relations, which are devised by means of the observations on the shapes of graphs of experimental data found in the literature. The proposed relations can be used in incremental form to predict suction in different frameworks insert ignore into journalissuearticles values(e.g. infiltration, evaporation); and related physical problems. An empirical equation is proposed for power parameter insert ignore into journalissuearticles values( K );, which is introduced in the relations. Only virgin wetting and virgin drying SWCCs and regime reversal point suffice to model a scanning curve in the developed formulations.
Keywords : Soil water characteristic curve, retention curve, scanning curve, hysteresis

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