| DOI: | 10.2172/973411
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| 报告号: | PNNL-19016
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| 报告题名: | Bonneville Powerhouse 2 3D CFD for the Behavioral Guidance System |
| 作者: | Rakowski, Cynthia L.; Richmond, Marshall C.; Serkowski, John A.
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| 出版年: | 2010
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| 发表日期: | 2010-02-01
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | computational fluid dynamics
; behavioral guidance system
; Bonneville Dam
; salmon passage
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| 中文主题词: | 深海测量学
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| 主题词: | BATHYMETRY
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| 英文摘要: | In 2008 and 2009, a 700 ft long, 10-ft deep floating forebay guidance wall called a behavioral guidance structure (BGS) was deployed in the Bonneville Powerhouse 2 forebay. The US Army Corps of Engineers, Portland District (CENWP) contracted with the Pacific Northwest National Laboratory (PNNL) to develop computational tools to assess the impact of the BGS on forebay hydraulics (this study). The tools developed here to provide a characterization of forebay hydraulics to be integrated with acoustic telemetry studies designed to measure the impact on juvenile salmon guidance and survival through Bonneville Powerhouse 2. In previous work, PNNL performed computational fluid dynamics (CFD) studies for the Bonneville forebay for CENWP. In this study, the existing model was modified to include the BGS. The model included a bay-by-bay spillway, a truncated Powerhouse 1 forebay, Powerhouse 2 turbine intakes and corner collector, and the forebay bathymetry extending approximately 1.5km upstream from the tip of Cascade Island. Model validation outcomes were similar to that of past studies. Additional checks were included on the impact of the differencing scheme to flow solution. It was found that using upwind differencing was adequate and it was possible to use a truncated computational mesh of this model that included a BGS upstream of Powerhouse 2 and increased spatial resolution in the vicinity of the BGS. This model has been validated, run, and provided to CENWP to use for additional analysis of the Powerhouse 2 forebay hydraulics. The PNNL particle tracking software (PT6) was used to assess the impacts of mass and relative buoyancy on particle fate. The particle tracker was run for the Half Load case for the clean forebay and for the forebay with the BGS in place and the Corner Collector on. All tracker cases showed that the BGS moved the particles across the forebay increasing the number of particles exiting the model through the Corner Collector and (for streamlines and neutrally-buoyant particles) the lower numbered turbine units. |
| URL: | http://www.osti.gov/scitech/servlets/purl/973411
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40012
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
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| 973411.pdf（54426KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Rakowski, Cynthia L.,Richmond, Marshall C.,Serkowski, John A.. Bonneville Powerhouse 2 3D CFD for the Behavioral Guidance System. 2010-01-01.
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