Browse Illinois Water Resources Center - Hydrology and Hydraulics by Subject "Water resources center"

  • Melching, Charles Steven; Yen, Ben Chie; Wenzel, Harry G., Jr. (University of Illinois at Urbana-Champaign. Water Resources Center, 1987-09)
    Floods have become the most prevalent and costly natural hazards in the U.S. When preparing real-time flood forecasts for a catchment flood warning and preparedness system, consideration must be given to four sources of ...

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  • Rhoads, Bruce; Garcia, Marcelo (University of Illinois at Urbana-Champaign. Water Resources Center, 2013)

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  • Kown, Bong Taick (University of Illinois at Urbana-Champaign. Water Resources Center, 1967-10)

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  • Fitzgerald, Steven D.; Holley, Edward R. (University of Illinois at Urbana-Champaign. Water Resources Center, 1979-12)
    In order to mix an additive or a tracer with the fluid flowing in a pipe, it may be desirable to avoid the energy required and the possible maintenance problems for mixers or obstructions in a pipe and to avoid the relatively ...

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  • Miller, Barbara A.; Wenzel, Harry G. (University of Illinois at Urbana-Champaign. Water Resources Center, 1984-09)
    The investigation of the low flow condition has become important in recent years as a means of determining critical levels of water pollution, aquatic habitat and instream flow needs. To assess these critical conditions, ...

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  • Maxwell, W. Hall C.; Snorrason, Arni (University of Illinois at Urbana-Champaign. Water Resources Center, 1981-01)
    Previous measurements of the velocity field in the vicinity of two intersecting submerged turbulent jets provided evidence that, contrary to the usual assumptions, intersecting flows may not necessarily be combined using ...

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  • Wang, Raymond Chun-Tsung; Wenzel, Harry G., Jr. (University of Illinois at Urbana-Champaign. Water Resources Center, 1970-01)
    This report represents a first step in the theoretical analysis of sheet flow with rainfall impinging on the free surface. This is a common occurrence in urban areas and many design procedures do not recognize the added ...

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  • Maxwell, W. Hall C.; Chang, Kuo-Cheng (University of Illinois at Urbana-Champaign. Water Resources Center, 1971-07)
    This analytic study used a generalization of Reichardt's hypothesis by Alexander, Baron & Comings to develop a unified treatment for the synthesis of diffusion patterns for mass, heat and momentum. The technique was applied ...

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  • Wenzel, Harry G.; Mathews, Michael J. (University of Illinois at Urbana-Champaign. Water Resources Center, 1968-01)
    The application of a method of velocity determination in an open channel using a microscope and camera to record the motion of small particles suspended in water is described. Velocity measurements were made in a series ...

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  • Wenzel, Harry G.; Chang, Kuo C. (University of Illinois at Urbana-Champaign. Water Resources Center, 1970-04)
    A method for velocity measurement is described which employs a microscope and high speed motion picture camera to record the motion of small tracer particles suspended in the flow. The procedure, termed the image method, ...

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  • Alavian, Vahid; Broeren, Sally M.; Bintz, David W. (University of Illinois at Urbana-Champaign. Water Resources Center, 1983-10)
    State-of-the-art of hydraulic and water quality modeling in streams and rivers does not include the role of large, slowly circulating regions in dilution and transport of effluents discharged in such water bodies. Examples ...

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  • Miller, Raymond J.; Overman, Allen R.; Peverly, John H. (University of Illinois at Urbana-Champaign. Water Resources Center, 1968-06)
    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 ...

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  • Waterman, David M.; Garcia, Marcelo H.; Chow, Ven Te (University of Illinois at Urbana-Champaign. Water Resources Center, 2013-05)
    Meandering river migration over large spatial and temporal scales has traditionally been numerically simulated using a bank erosion submodel that calculates the eroding bank migration rate as the product of the near-bank ...

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  • Demissie, M.; Soong, T.W.; Bhowmik, N.G.; Fitzpatrick, W.P.; Maxwell, W. Hall C. (University of Illinois at Urbana-Champaign. Water Resources Center, 1986-07)
    Secondary circulation which is sometimes referred to as secondary flow, secondary current or transverse current is an important phenomenon in natural streams and plays an important role in many natural processes in streams ...

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  • Yen, Ben Chie (University of Illinois at Urbana-Champaign. Water Resources Center, 1971-12)
    Recent development and improvement in numerical techniques and computer capability enables more accurate numerical solutions of spatially varied flow problems such as various phases of urban storm runoffs. Consequently, ...

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  • Maxwell, W. Hall C.; Holley, Edward R.; Lin, Chi-Yu; Tekeli, Sahim (University of Illinois at Urbana-Champaign. Water Resources Center, 1975-02)
    The study presents a general analysis of two-layered stratified flows taking into account effects of sidewall friction and variation of density with horizontal distance. The analysis is applied to the study of arrested ...

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  • Boggess, W.R.; Verry, Elon S., Jr. (University of Illinois at Urbana-Champaign. Water Resources Center, 1967-02)
    In an eight-year study of precipitation and water-yield relationships on the Lake Glendale Watershed, Boggess et al (1965) suggested that the nature of the underlying fragipan soil had a significant effect on the flow ...

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  • Jones, Barclay G.; Beoletto, James A.; Meek, Charcles C.; Ostensen, Raymond J.; Robin, Ronald (University of Illinois at Urbana-Champaign. Water Resources Center, 1971-03)
    Modifications to an existing experimental system have been made and have been demonstrated to provide the required resolution and variable parameterization necessary for a detailed study of dilute particle suspensions in ...

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  • Jones, Barclay G.; Gronager, John E. (University of Illinois at Urbana-Champaign. Water Resources Center, 1980-03)
    Increased utilization of non-dilute, solid-fluid suspensions in transporting materials and in estimating the distribution of particles from atmospheric fallout, demands that the basic fluid-particle interactions be thoroughly ...

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  • Yang, Chih Ted; Stall, John B. (University of Illinois at Urbana-Champaign. Water Resources Center, 1974-07)
    The relationship between rate of sediment transport and rate of potential energy expenditure has been studied in detail. Unit stream power, defined as the time rate of potential energy expenditure per unit weight of water, ...

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