A HELE-SHAW MODEL STUDY OF OSCILLATING WATER TABLES IN DRAINED HOMOGENEOUS SOILS

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Abstract
Water-table heights in a drained soil under seasonally fluctuating irrigation intensities were investigated experimentally by means of a Hele-Shaw model and were compared with the theoretical harmonic predictions of E. C. Childs. Good agreement was found between theory and experiment in the values of mean water-table heights and their amplitudes of oscillation. The oscillation was found to deviate from the simple harmonic form predicted by the theory for short time periods. The deviation was attributed to limitations in the Hele-Shaw model. Water-table heights in a drained soil under seasonally fluctuating irrigation intensities were investigated experimentally by means of a Hele-Shaw model and were compared with the theoretical harmonic predictions of E. C. Childs. Good agreement was found between theory and experiment in the values of mean water-table heights and their amplitudes of oscillation. The oscillation was found to deviate from the simple harmonic form predicted by the theory for short time periods. The deviation was attributed to limitations in the Hele-Shaw model. © Williams & Wilkins 1974. All Rights Reserved.

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