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Geomorphologists have long recognized the importance of pools and riffles in the development and maintenance of straight, meandering and braided streams. The ecological importance of pools and riffles has also been acknowledged, with the... more
Geomorphologists have long recognized the importance of pools and riffles in the development and maintenance of straight, meandering and braided streams. The ecological importance of pools and riffles has also been acknowledged, with the associated hydraulic variability contributing to the habitat richness required for the development of a healthy ecosystem. Most of the pool-riffle studies to date have concentrated on
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ABSTRACT
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Physical Habitat Analysis and Design of In-Channel Structures on a Chicago, IL, Urban Drainage: A Stream Naturalization Design Process. [ASCE Conference Proceedings 112, 189 (2002)]. John S. Schwartz, Edwin E. Herricks ...
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Research Interests: Geography, Hydrology, Environmental Monitoring, Rivers, Urban Health, and 15 moreMultidisciplinary, Chicago, Salinity, Temperature, Surface Water, Current Density, Urban Environment, Stream, Gravity Current, Time Factors, Illinois, Seasons, Density Stratification, Acoustic Doppler current profiler, and Chlorides
Research Interests: Environmental Engineering, Civil Engineering, Social Theory, Decision Making, Environmental Design, and 9 moreScience and Technology, Fluvial Geomorphology, Theory and Method, Aquatic Ecosystem, Biological Diversity, Watershed Management, Hydraulic Modeling, Decision making process, and Local Community
In this paper, we focus on bubble plumes aimed at providing oxygen to, and at mixing unstratified water bodies. First, we discuss scaling relations obtained from a three-dimensional (3D) theoretical model for multi-component fluids.An... more
In this paper, we focus on bubble plumes aimed at providing oxygen to, and at mixing unstratified water bodies. First, we discuss scaling relations obtained from a three-dimensional (3D) theoretical model for multi-component fluids.An expression for a length scale that represents a balance between inertia and buoyancy is derived, and it is used to scale vertical as well as horizontal
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Research Interests: Environmental Engineering, Civil Engineering, Mathematics, Art, Computational Fluid Dynamics, and 15 moreTurbulence, Large Eddy Simulation, Direct Numerical Simulation, Density, Finite Element, Open Source, Numerical Simulation, Instability, Models, Flow, Computation Fluid Dynamics, Hydraulic, Turbulence Model, Numerical Solution, and three-dimensions
Research Interests: Civil Engineering, Computational Fluid Dynamics, Hydraulics, Numerical Simulation, Computation Fluid Dynamics, and 10 moreHydraulic Engineering, Error Analysis, Flow measurement, Velocity, Hydraulic, Numerical Model, Three Dimensional, Flow Velocity, Perturbation, and Acoustic Doppler current profiler
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Bubble plumes are planned to provide mixing and aeration in a large reservoir to hold combined sewage from flood events in the Chicago area. We performed physical experiments and numerical simulations to help in the design and operation... more
Bubble plumes are planned to provide mixing and aeration in a large reservoir to hold combined sewage from flood events in the Chicago area. We performed physical experiments and numerical simulations to help in the design and operation of the reservoir. For the design conditions a one-dimensional model of the plume shows that the effects of mass transfer and bubble
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The large variations in the inflows together with the complex operation of Combined Sewer Overflow (CSO) systems may result in flow conditions that vary from dry to free surface flow to partly free surface-partly pressurized flow (mixed... more
The large variations in the inflows together with the complex operation of Combined Sewer Overflow (CSO) systems may result in flow conditions that vary from dry to free surface flow to partly free surface-partly pressurized flow (mixed flow), to fully pressurized flow. Transitions from one flow regime to another are governed by flow instabilities (Yen 1986). Some of these instabilities may produce undesirable events such as geysering phenomena, blow-off of manhole covers, manhole overtopping or structural damage of the system. In ...