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Figure 1 - Bathymetry of The Dalles
Application: Endangered Fish Benefit from CFD
Posted Wed August 07, 2002 @10:19AM
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Application Environmental applications of computational fluid dynamics (CFD) have become more common in recent years with the increased availability and ease of use of commercial grid generation software and CFD solvers. Pacific Northwest National Laboratory has been supporting studies by the US Army Corps of Engineers, Portland District by creating and applying Reynolds-Averaged Navier Stokes (RANS) CFD models to the Columbia River and portions of the dam structures at several hydroelectric projects, including the tailrace of The Dalles Dam.

Numerical models in The Dalles tailrace are being used to support efforts to reduce fish mortality associated with fish passaging of the hydroelectric project. At The Dalles, several locations have been proposed for a high flow outfall that would move fish around the dam rather than through the turbines or over the spillway.

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