Home / Media / News / NewsSearch
Results:
Tag: physical model
Clear

  • Low-Sill Control Structure: Physical Modeling Investigation—Potential Upstream Dike Fields

    Abstract: The model investigation reported herein describes the process to analyze the effects of proposed dikes in various locations upstream of the Low-Sill Control Structure (LSCS) using an existing 1:55 Froude-scaled physical model. The purpose of this effort was to utilize the physical model to explore potential configurations of river-training structures in the approach channel that would result in more uniform flow conditions at the structure. This analysis was conducted by constructing dikes out of both sandbags and rock. Each dike configuration was surveyed using lidar and then tested by collecting particle-tracking velocimetry data. A total of nine dike configurations were tested in the physical model, and the resulting flow fields in the approach channel were provided to the US Army Corps of Engineers, Mississippi Valley Division. Most configurations resulted in data that showed improved, straighter flow paths in the approach channel. The results of these tests indicated that an L-head dike configured as the 50 ft stone dike 1-23A provided relatively straight flow conditions approaching the LSCS with relative uniform velocities across the channel.

  • Low Sill Control Structure: Physical Modeling Investigation of Riprap Stability Downstream of End Sill

    The model investigation reported herein describes the process to model and analyze the stability of scaled riprap in the existing 1:55 Froude-scaled Low Sill Control Structure physical model. The existing model is a fixed-bed model, so modifications were made to create a testing section for the scaled stone. Three separate gradations of scaled riprap were tested at varying boundary conditions (discharge, head and tailwater elevations, and gate openings). Each test was surveyed using lidar for pre to posttest comparisons. It was found that Gradation B remained stable throughout the tests in the physical model.

  • Low Sill Control Structure: Physical Modeling Investigation of Velocities Downstream of the End Sill

    Abstract: The model investigation reported herein describes the process to measure velocities at various locations downstream of the Low Sill Control Structure using an existing 1:55 Froude-scaled physical model. To collect these measurements, an acoustic-Doppler velocimeter was deployed downstream of the structure at varying locations and depths. A total of 79 velocity measurements were taken across nine flow conditions (discharge, head and tailwater elevations, and gate openings) provided by the US Army Corps of Engineers, New Orleans District.

  • USACE Vicksburg District partners with Engineer Research and Development Center to build model of Yazoo Backwater Pump Project

    VICKSBURG, Miss. — The U.S. Army Corps of Engineers (USACE) Vicksburg District in coordination with the U.S. Army Engineer Research and Development Center (ERDC) has recently developed a physical model of the Yazoo Backwater Pump project.

  • Collaborating with academia to develop future practice and practitioners

    In this episode of the Engineering With Nature® (EWN®) Podcast, guests are Dr. Brian Bledsoe, director of the University of Georgia’s Institute for Resilient Infrastructure Systems (IRIS), and Dr. Todd Bridges, senior research scientist for environmental science with the U.S. Army Corps of Engineers (USACE) and national lead of the EWN Initiative and the sponsor of this podcast. They discuss a new partnership, the Network for Engineering With Nature (N-EWN), to promote new practices and expertise and to foster the drive and passion for delivering nature-based solutions for infrastructure in the next generation of scientists, engineers, business leaders and decision-makers.