Characterizing the Fish Passage Environment at The Dalles Dam Spillway: 2001-2004

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The spill environment at The Dalles Dam in 2001-2004 was characterized using a field-deployed autonomous sensor (the so-called Sensor Fish), computational fluid dynamics (CFD) modeling, and Lagrangian particle tracking. The sensor fish has a self-contained capability to digitally the record pressure and triaxial accelerations it was exposed to following its release into the spillway. After recovery downstream of the tailrace, the data stored in the memory of the sensor are downloaded and stored for analysis. The spillway, stilling basin, and tailrace hydrodynamics were simulated using an unsteady, free-surface, three-dimensional CFD code that solved the Reynolds-averaged Navier-Stokes equations in conjunction with ... continued below

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Richmond, Marshall C.; Carlson, Thomas J.; Serkowski, John A.; Cook, Chris B.; Duncan, Joanne P. & Perkins, William A. October 10, 2007.

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  • Pacific Northwest National Laboratory (U.S.)
    Publisher Info: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States), Environmental Molecular Sciences Laboratory (EMSL)
    Place of Publication: Richland, Washington

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Description

The spill environment at The Dalles Dam in 2001-2004 was characterized using a field-deployed autonomous sensor (the so-called Sensor Fish), computational fluid dynamics (CFD) modeling, and Lagrangian particle tracking. The sensor fish has a self-contained capability to digitally the record pressure and triaxial accelerations it was exposed to following its release into the spillway. After recovery downstream of the tailrace, the data stored in the memory of the sensor are downloaded and stored for analysis. The spillway, stilling basin, and tailrace hydrodynamics were simulated using an unsteady, free-surface, three-dimensional CFD code that solved the Reynolds-averaged Navier-Stokes equations in conjunction with a two-equation turbulence model. The results from the CFD simulations were then used in a Lagrangian particle tracking model that included the effects of mass, drag, and buoyancy in the particle equation of motion. A random walk method was used to simulate the effects of small-scale turbulence on the particle motion. Several operational and structural conditions were evaluated using the Sensor Fish, CFD, and particle tracking. Quantifying events such as strike and stilling basin retention time characterized exposure conditions in the spill environment.

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  • Report No.: PNNL-16521
  • Grant Number: AC05-76RL01830
  • DOI: 10.2172/926967 | External Link
  • Office of Scientific & Technical Information Report Number: 926967
  • Archival Resource Key: ark:/67531/metadc893244

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  • October 10, 2007

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 9:12 p.m.

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Richmond, Marshall C.; Carlson, Thomas J.; Serkowski, John A.; Cook, Chris B.; Duncan, Joanne P. & Perkins, William A. Characterizing the Fish Passage Environment at The Dalles Dam Spillway: 2001-2004, report, October 10, 2007; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc893244/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.