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Featured Projects

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Fundamental Research

  • Flumes

    • IIHR's large-scale recirculating flume.

      IIHR’s large-scale recirculating flume.

      IIHR Engineering Services (IES) has designed and built many flumes over the years, both for the University of Iowa/IIHR, and for other universities and labs. We no longer install flumes for other institutions, but we do design them. IES engineers start with the client’s specifications regarding flume size, tilt, flow, and other special considerations. We perform engineering calculations and size the steel, the glass thickness, design the connections, size the pumps, etc. From these we develop a detailed 2D and 3D set of drawing of the entire structure. IES delivers the design documents, including a complete set of drawings and a short report document, to the client, who can contract a local fabrication shop to build the flume.

  • Wind Tunnel

    • IES staff recently completed the design and construction of a remarkable wind tunnel for use in fundamental research and education. The tunnel can be put to many purposes, including upcoming research that will conduct performance measurements of wind turbine blades, including flow field, dynamic stall, and the interaction between multiple wind turbines. The wind tunnel will accommodate a 1/30th-scale turbine.

Applied Research

  • Sewer System Model for the City of St. Louis

    • Researchers at IIHR are among the world’s leaders when it comes to modeling and design of sewer and stormwater conveyance systems. IIHR has extensive experience constructing physical models that help solve water issues, including the reduction of air in sewer systems with underground tunnels. Working with Jacobs Engineering and the Metropolitan St. Louis Sewer District, IES staff constructed a 1:16 physical model of a portion of the St. Louis sewer project. The IIHR model includes a vortex dropshaft that, when constructed, will be one of the largest in the world at 20 feet in diameter. Many larger cities are adopting similar strategies to deal with combined sewer overflows. And IIHR is ready, with expertise and experience to help.



  • Thames Tideway Tunnels/Stormwater Interception

    • IES engineers and staff are part of a massive effort to modernize London’s sewer system and to protect the Thames from combined sewage and stormwater discharges. The plan calls for the construction of a 19-mile tunnel system beneath the river to intercept the combined sewage in order to transfer and store it until it can be treated and safely discharged. IIHR is a key partner in the project, conducting physical modeling to simulate movement of water and air through the many interception chambers, drop shafts, and orifices required to capture the flow into the tunnel system.

    Troy Lyons watches water move through a model simulating some of the many interception chambers, drop shafts, and orifices that will capture the flow into London's tunnel system.

    Troy Lyons watches water move through a model simulating some of the many interception chambers, drop shafts, and orifices that will capture the flow into London’s tunnel system.

  • Fish Passage Structures/Spillway Modifications

    • IIHR researchers have been involved in fish passage research since the 1930s, and working with the Grant County Public Utility District in the Pacific Northwest, for more than 30 years. IIHR engineers developed hydrodynamic models that work in tandem with an innovative computer model to help researchers understand how fish would move in a particular flow environment. By using good engineering and biological judgment, careful laboratory simulations, and CFD modeling, IIHR has achieved a remarkable record of meeting and exceeding performance expectations.
  • Testing for Scour around Bridge Piers

    • IIHR research vessels are equipped with state-of-the-art RESON SeaBat 7125 multi-beam and single-beam echo sounders, capable of collecting data resulting in a high-resolution three-dimensional map of the river bottom. The dataset captures the topographic, bathymetric, and substrate features of the river bottom. These data support a broad range of research, including evaluating the influences of environmental and adaptive river management changes on river corridors and watersheds, documenting habitat characteristics, evaluating river scour around structures, and more. The multi-beam echo sounder can simultaneously scan 512 locations on the riverbed over an angle of 120 degrees and resolve depths to accuracies of ¼-inch.
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Last modified on June 26th, 2018
Posted on August 6th, 2014

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