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Saturday, July 18, 2020 | History

2 edition of Non-Darcy flow characteristics of water as influenced by clay concentration found in the catalog.

Non-Darcy flow characteristics of water as influenced by clay concentration

Miller, Raymond J.

Non-Darcy flow characteristics of water as influenced by clay concentration

by Miller, Raymond J.

  • 325 Want to read
  • 35 Currently reading

Published by University of Illinois, Water Resources Center in Urbana .
Written in English

    Subjects:
  • Sediment transport.,
  • Hydraulics.,
  • Montmorillonite.,
  • Kaolinite.

  • Edition Notes

    Statement[by] Raymond J. Miller, Allen R. Overman [and] John H. Peverly.
    SeriesWRC research report no. 16
    ContributionsOverman, Allen R., 1937- joint author., Peverly, John H., joint author.
    Classifications
    LC ClassificationsHD1694 .A136 no. 16, TC175.2 .A136 no. 16
    The Physical Object
    Paginationv, 50 l.
    Number of Pages50
    ID Numbers
    Open LibraryOL5020930M
    LC Control Number76633704

    5. There is a water temperature effect on the flow characteristics, also. Flow velocity and the von Karman parameter decrease slightly with water temperature. While the flow velocity drops off by about percent when the water temperature is increased by 1 oC, there is approximately a percent rise in the von Karman parameter value. PREFACE The first and second editions of this book, published in and , respectively, have had a total of some 10 printings and a worldwide circulation. If a book of this.

    Massive amounts of water flow on the surface, within, and at the base of a glacier, even in cold areas and even when the glacier is advancing. Depending on its velocity, this water is able to move sediments of various sizes and most of that material is washed out of the lower end of the glacier and deposited as outwash sediments. Osmotic suction induced by chemical concentration gradients between reservoir salt solution and soil-water can be treated as an equivalent net stress component, (p π) that decreases the swelling strains of unsaturated specimens from reduction in microstructural and macrostructural swelling components. The direction of osmotic flow affects the.

    Groundwater and surface water contain both dissolved and suspended particles. Coagulation and flocculation are used to separate the suspended solids portion from the water. Suspended particles vary in source, charge, particle size, shape, and density. Correct application of coagulation and flocculation depends upon these factors. Topic No: The Characteristics of Clay Department of Civil Engineering Sep Page 9 of 12 This dispersive structure is most desirable where a very low hydraulic conductivity is required. Here a greater portion of the soil water is adsorbed on the clay mineral making the water harder to move, and the soil less permeable. Further, there is.


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Non-Darcy flow characteristics of water as influenced by clay concentration by Miller, Raymond J. Download PDF EPUB FB2

Non-Darcy flow characteristics of water as influenced by clay concentration. Urbana, University of Illinois, Water Resources Center, (OCoLC) Document Type: Book: All Authors / Contributors: Raymond J Miller; Allen R Overman; John H Peverly.

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 Cited by: 1.

Historical researches on non-Darcy effects based on the Forchheimer's equation are reviewed under the needs for modeling unsaturated water flow and heat transport in highly permeable porous media.

InKing Hagen first discovered that water in porous media seepage process presented non-Darcy phenomenon (Longmuir, ). Thereafter, a number of researchers also found that the seepage process in compacted clay deviated from Darcy's law in the case of low seepage velocity and there is a threshold gradient i 0 (Mitchell and Younger Cited by: 8.

Fluid flow in porous media is often described by Darcy’s law, which characterizes a linear correlation between flow velocity and the pressure gradient (Bear,Kumar et al., ).However, numerous studies (Soni et al.,Coles and Hartman,Dejam et al.,Diwu et al., ) have shown that the Darcy velocity, in both saturated and unsaturated flows, exhibits nonlinear Author: Zhilin Cheng, Zhilin Cheng, Zhengfu Ning, Sheng Dai.

The hydraulic conductivity and threshold gradient of the clay liner are affected by the high concentration of complex components. In order to study the influence of leachate concentration on permeability of compacted clay, three pollutants namely Na +, Pb 2+ and COD were selected to conduct permeability study for compacted clay.

COD is. When three solutions were provided with the same concentration, Pb²⁺ had the greatest influence on hydraulic conductivity and threshold gradient of saturated compacted clay, followed by Na. For a matrix composition of clay and mucky soil, the flow law follows the non-Darcy law; however, it follows Darcy's law for the SRM with a fine sand matrix.

The non-Darcy flow properties are studied with the Forchheimer equation to obtain the permeability coefficient for SRM with different rock block percentages. This type of flow is common in arid, semiarid and sub-humid climates, and in karst areas.

The distance from point 3 to point 4 depends on the amount of runoff, moisture characteristics of the soil, topography, and hydraulic features of the flow. Interflow or quick return flow—In figure 15–1, point.

A series of experimental flow tests for artificial block-in-matrix-soils (bimsoils) samples with various slenderness ratios were performed to study the Non-Darcy groundwater flow characteristics. The variations of seepage velocity, permeability coefficient, critical sample height, and non-Darcy flow factor for samples against slenderness ratios.

The membrane separation process has been significantly highlighted for the treatment of water and effluents in a scenario of water resource scarcity. Effective treatments capable of reducing costs and waste are always necessary, with the planning of the experiments before their execution of interest.

The purpose of this work was to evaluate, through experimental planning, the influence of the. Non-Darcy Flow Characteristics of Water as influenced by Clay Concentration Investigators: R.J. Miller, A.R. Overman, and J.H.

Peverly, University of Illinois at Urbana-Champaign Completed: Rocks as small as tiny clay particles and larger that are moved by the water are called sediment. Fast-moving water can pick up, suspend, and move larger particles more easily than slow-moving waters.

This is why rivers are more muddy-looking during storms—they are carrying a LOT more sediment than they carry during a low-flow period.

The fluid flow is moderate and the permeability of the medium is assumed to be low, so that the Forchheimer flow model is applicable.,The flow of Casson fluids (such as drilling muds, clay coatings and other suspensions, certain oils and greases, polymer melts and many emulsions), in the presence of heat transfer, is an important research area.

Book 5 LABORATORY ANALYSIS. concentration, the quantity and characteristics of the sediment, and the chemical quality of water from the stream (native water) must be considered in the processing of the sample. certain types of mineralized water and (or) containing colloidal clay result in difficult sep.

He reported rates of flow for benzeneto 1, times greater than for water in the same clay. He considered that particle spacing, particle size as influenced by aggregation or dispersion, particle arrangement, adsorbed layers, and inter- lamellar swelling all influenced the permeability.

The time of concentration is defined as the time required for water to flow from the most remote point of the tributary area to the design point, and is determined for the selected flow length that represents the longest waterway through a rural watershed or the most representative flow path through.

pH - A term used to describe the acid-base characteristics of water, typically measured by a pH meter. Specifically, the concentration of H+ ions in water. Formally, pH is the negative logarithm of the H + concentration, i.e., pH = -log [H+]. The following values indicate the classification of a water: pH.

The quality of water may be described in terms of the concentration and state (dissolved or particulate) of some or all of the organic and inorganic material present in the water, together with certain physical characteristics of the water.

It is determined by in situ measurements and by examination of water samples on site or in the laboratory. Fluid flow that deviates from Darcy's law, which assumes laminar flow in the -Darcy flow is typically observed in high-rate gas wells when the flow converging to the wellbore reaches flow velocities exceeding the Reynolds number for laminar or Darcy flow, and results in turbulent flow.

The results indicate that the particle transfer could cause an increase in porosity, permeability, and water inflow, which is the essential reason for water inrush in completely weathered granite.

Moreover, due to the effect of particle transfer, the flow properties may change from a Darcy to non-Darcy flow, which is a key signal for water inrush.Treatment of cooling water will be different depending upon the kind of system in use. Here are the basic types: A once-through cooling system pumps water into equipment where it passes over a hot surface in order to cool it.

The water then exits the equipment, taking heat with it. Simple and effective in a wide range of applications, this.Measuring salinity status. The effect of dissolved salts on plant growth depends on their concentration in the soil solution at any particular time but it is extremely difficult to measure the soil solution concentration at the usual field moisture contents due to sampling problems.