تقرير
The Dalles Dam, Columbia River: Spillway Improvement CFD Study
| العنوان: | The Dalles Dam, Columbia River: Spillway Improvement CFD Study |
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| المؤلفون: | Cook, Chris B., Richmond, Marshall C., Serkowski, John A. |
| المساهمون: | United States. Department of Energy. |
| بيانات النشر: | Pacific Northwest National Laboratory (U.S.) |
| سنة النشر: | 2006 |
| المجموعة: | University of North Texas: UNT Digital Library |
| مصطلحات موضوعية: | Removal, Fluid Mechanics, Columbia River, Juveniles, Computerized Simulation, Basalt, Hydraulics, Salmon, Shores, Spillways, Fish Passage Facilities, Us Corps Of Engineers, Baffles, Configuration, 13 Hydro Energy, Cfd Modeling, Hydraulic Modeling, The Dalles Dam, Fish Survival, Flow Prediction, Monitors, Velocity Cfd Modeling |
| الوصف: | This report documents development of computational fluid dynamics (CFD) models that were applied to The Dalles spillway for the US Army Corps of Engineers, Portland District. The models have been successfully validated against physical models and prototype data, and are suitable to support biological research and operations management. The CFD models have been proven to provide reliable information in the turbulent high-velocity flow field downstream of the spillway face that is typically difficult to monitor in the prototype. In addition, CFD data provides hydraulic information throughout the solution domain that can be easily extracted from archived simulations for later use if necessary. This project is part of an ongoing program at the Portland District to improve spillway survival conditions for juvenile salmon at The Dalles. Biological data collected at The Dalles spillway have shown that for the original spillway configuration juvenile salmon passage survival is lower than desired. Therefore, the Portland District is seeking to identify operational and/or structural changes that might be implemented to improve fish passage survival. Pacific Northwest National Laboratory (PNNL) went through a sequence of steps to develop a CFD model of The Dalles spillway and tailrace. The first step was to identify a preferred CFD modeling package. In the case of The Dalles spillway, Flow-3D was as selected because of its ability to simulate the turbulent free-surface flows that occur downstream of each spilling bay. The second step in development of The Dalles CFD model was to assemble bathymetric datasets and structural drawings sufficient to describe the dam (powerhouse, non-overflow dam, spillway, fish ladder entrances, etc.) and tailrace. These datasets are documented in this report as are various 3-D graphical representations of The Dalles spillway and tailrace. The performance of the CFD model was then validated for several cases as the third step. The validated model was then applied to address specific SIS design ... |
| نوع الوثيقة: | report |
| وصف الملف: | PDFN; Text |
| اللغة: | English |
| العلاقة: | rep-no: PNNL-14768; grantno: AC05-76RL01830; osti: 969745; http://digital.library.unt.edu/ark:/67531/metadc927289Test/; ark: ark:/67531/metadc927289 |
| DOI: | 10.2172/969745 |
| الإتاحة: | https://doi.org/10.2172/969745Test http://digital.library.unt.edu/ark:/67531/metadc927289Test/ |
| رقم الانضمام: | edsbas.9E590083 |
| قاعدة البيانات: | BASE |
| DOI: | 10.2172/969745 |
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