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Discussion of "Reservoir Level Rise under Extreme Driftwood Blockage at Ogee Crest" by Loïc Bénet, Giovanni De Cesare, and Michael Pfister.

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Title: Discussion of "Reservoir Level Rise under Extreme Driftwood Blockage at Ogee Crest" by Loïc Bénet, Giovanni De Cesare, and Michael Pfister.
Authors: Stocker, B.1 (AUTHOR) stocker@vaw.baug.ethz.ch, Schalko, I.2 (AUTHOR) schalko@vaw.baug.ethz.ch, Lais, A.3 (AUTHOR) lais@vaw.baug.ethz.ch, Boes, R. M.4 (AUTHOR) boes@vaw.baug.ethz.ch
Source: Journal of Hydraulic Engineering. Dec2021, Vol. 147 Issue 12, p1-2. 2p.
Subjects: Arch dams, Concrete dams, Wood density, Discharge coefficient
Abstract: Specifically, for a relative pier overhang HT p/HR=0.35 ht , the driftwood blockage resulted in HT =0.77 ht . In addition, the results for the Ova Spin crest (black triangles) show no significant discharge reduction up to HT p/HR=0 ht and do not follow the ogee crest data set. The resulting head HT H ht was measured after every sequence of added model logs. [Extracted from the article]
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Database: Engineering Source
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Abstract:Specifically, for a relative pier overhang HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>p</mi><mo stretchy="false">/</mo><msub><mi>H</mi><mi>R</mi></msub><mo>=</mo><mn>0.35</mn></mrow></math> ht , the driftwood blockage resulted in HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi> </mi><mo>=</mo><mn>0.77</mn></mrow></math> ht . In addition, the results for the Ova Spin crest (black triangles) show no significant discharge reduction up to HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>p</mi><mo stretchy="false">/</mo><msub><mi>H</mi><mi>R</mi></msub><mo>=</mo><mn>0</mn></mrow></math> ht and do not follow the ogee crest data set. The resulting head HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>H</mi></mrow></math> ht was measured after every sequence of added model logs. [Extracted from the article]
ISSN:07339429
DOI:10.1061/(ASCE)HY.1943-7900.0001945