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Title:Non-Darcy flow characteristics of water as influenced by clay concentration
Author(s):Miller, Raymond J.; Overman, Allen R.; Peverly, John H.
Contributor(s):University of Illinois at Urbana-Champaign
Subject(s):Water resources center
Water resources center--Illinois
Hydrology and hydraulics
Non-Darcy flow
Threshold gradients
Pressure transducers
Geographic Coverage:Illinois (state)
Abstract:The flow of water through saturated samples of montmorillonite and kaolinite was studied to help clarify the existence and nature of non-Darcian flow. No threshold gradients were found in any of the samples studied. Non-Darcy flow was found in 9, 30 and 40 weight percent montmorillonite samples but not in a 50 weight percent montmorillonite or in kaolinite samples. The possible causes of the non-Darcian flow are discussed. A refined technique using a pressure transducer was developed to measure hydraulic conductivities. The hydraulic conductivities of several types of samples under varying conditions were measured. Transport equations for convective diffusion in porous media were derived and tested for capillaries, porous diaphragms, sand columns and clay plugs.
Issue Date:1968-06
Publisher:University of Illinois at Urbana-Champaign. Water Resources Center
Genre:Report (Grant or Annual)
Sponsor:U.S. Department of the Interior
U.S. Geological Survey
Rights Information:Copyright 1968 held by Raymond J. Miller, Allen R. Overman, John H. Peverly
Date Available in IDEALS:2016-05-25

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