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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Water |
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| Online Access: | http://www.mdpi.com/2073-4441/10/8/1066 |
| _version_ | 1811305398769025024 |
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| author | Roman Gabl Bernhard Gems Florian Birkner Bernhard Hofer Markus Aufleger |
| author_facet | Roman Gabl Bernhard Gems Florian Birkner Bernhard Hofer Markus Aufleger |
| author_sort | Roman Gabl |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-13T08:24:41Z |
| format | Article |
| id | doaj.art-88e0d85524ef4a9e9fd0a70c958a6f76 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-04-13T08:24:41Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-88e0d85524ef4a9e9fd0a70c958a6f762022-12-22T02:54:31ZengMDPI AGWater2073-44412018-08-01108106610.3390/w10081066w10081066Adaptation of an Existing Intake Structure Caused by Increased Sediment LevelRoman Gabl0Bernhard Gems1Florian Birkner2Bernhard Hofer3Markus Aufleger4School of Engineering, Institute for Energy Systems, The University of Edinburgh, FloWave Ocean Energy Research Facility, Max Born Crescent, Edinburgh EH9 3BF, UKUnit of Hydraulic Engineering, University of Innsbruck, Technikerstraße 13, 6020 Innsbruck, AustriaUnit of Hydraulic Engineering, University of Innsbruck, Technikerstraße 13, 6020 Innsbruck, AustriaTIWAG-Tiroler Wasserkraft AG, Eduard-Wallnöfer-Platz 2, 6020 Innsbruck, AustriaUnit of Hydraulic Engineering, University of Innsbruck, Technikerstraße 13, 6020 Innsbruck, AustriaAn 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.http://www.mdpi.com/2073-4441/10/8/1066hydropowerintakehydraulics of renewable energy systemshydraulic structure design and managementRANS modelscale model testvalidation |
| spellingShingle | Roman Gabl Bernhard Gems Florian Birkner Bernhard Hofer Markus Aufleger Adaptation of an Existing Intake Structure Caused by Increased Sediment Level Water hydropower intake hydraulics of renewable energy systems hydraulic structure design and management RANS model scale model test validation |
| title | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
| title_full | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
| title_fullStr | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
| title_full_unstemmed | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
| title_short | Adaptation of an Existing Intake Structure Caused by Increased Sediment Level |
| title_sort | adaptation of an existing intake structure caused by increased sediment level |
| topic | hydropower intake hydraulics of renewable energy systems hydraulic structure design and management RANS model scale model test validation |
| url | http://www.mdpi.com/2073-4441/10/8/1066 |
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