Comparison of Blade-Strike Modeling Results with Empirical Data | |
Carlson, Thomas J. ; Ploskey, Gene R. | |
Pacific Northwest National Laboratory (U.S.) | |
关键词: Probability; Orientation; Computerized Simulation; Fish; Mathematical Models; | |
DOI : 10.2172/15007840 RP-ID : PNNL-14603 RP-ID : AC06-76RL01830 RP-ID : 15007840 |
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美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
This study is the initial stage of further investigation into the dynamics of injury to fish during passage through a turbine runner. As part of the study, Pacific Northwest National Laboratory (PNNL) estimated the probability of blade strike, and associated injury, as a function of fish length and turbine operating geometry at two adjacent turbines in Powerhouse 1 of Bonneville Dam. Units 5 and 6 had identical intakes, stay vanes, wicket gates, and draft tubes, but Unit 6 had a new runner and curved discharge ring to minimize gaps between the runner hub and blades and between the blade tips and discharge ring. We used a mathematical model to predict blade strike associated with two Kaplan turbines and compared results with empirical data from biological tests conducted in 1999 and 2000. Blade-strike models take into consideration the geometry of the turbine blades and discharges as well as fish length, orientation, and distribution along the runner.
【 预 览 】
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15007840.pdf | 2872KB | download |