Adaptation of an Existing Intake Structure Caused by Increased Sediment Level
An unexpected and massive redistribution of fine sediment in a large Alpine reservoir was triggered by a further lowering of the water level to conduct maintenance work. This caused the need of a total redesign of the existing head race intake for a high head power plant in the Austrian Alps. Two ma...
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| Veröffentlicht in: | Water (Basel) 2018-08, Vol.10 (8), p.1066 |
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| creator | Gabl, Roman Gems, Bernhard Birkner, Florian Hofer, Bernhard Aufleger, Markus |
| description | An unexpected and massive redistribution of fine sediment in a large Alpine reservoir was triggered by a further lowering of the water level to conduct maintenance work. This caused the need of a total redesign of the existing head race intake for a high head power plant in the Austrian Alps. Two main geometry options for the trash rack support structure are compared with numerical simulations (ANSYS-CFX) as well as with a scale model test (scale 1:20). The laboratory experiment substantially benefited from the preliminary numerical investigation in respect of the location and implementation of the model boundaries. In return was the confidence in the numerics strengthened by the successful validation of the local head loss and the velocity distribution for the main operation cases. This allowed that the main inputs for the structural design and the further optimisation is conducted only with the 3D-numerical tool. The paper presents the interlaced concept as well as the main finding of the investigation, which lead to a successful adaptation of the intake structure. |
| doi_str_mv | 10.3390/w10081066 |
| format | Article |
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The paper presents the interlaced concept as well as the main finding of the investigation, which lead to a successful adaptation of the intake structure.</description><identifier>ISSN: 2073-4441</identifier><identifier>EISSN: 2073-4441</identifier><identifier>DOI: 10.3390/w10081066</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Adaptation ; Alpine environments ; Boundary conditions ; Computer simulation ; Design optimization ; Energy ; Hydraulics ; Model testing ; Power plants ; Redesign ; Renewable resources ; Scale models ; Sediments ; Simulation ; Structural design ; Structural engineering ; Velocity distribution ; Water levels</subject><ispartof>Water (Basel), 2018-08, Vol.10 (8), p.1066</ispartof><rights>2018. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). 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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
| subjects | Adaptation Alpine environments Boundary conditions Computer simulation Design optimization Energy Hydraulics Model testing Power plants Redesign Renewable resources Scale models Sediments Simulation Structural design Structural engineering Velocity distribution Water levels |
| title | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
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