Case Study of Transient Dynamics in a Bypass Reach
The operating conditions of Nordic hydropower plants are expected to change in the coming years to work more in conjunction with intermittent power production, causing more frequent hydropeaking events. Hydropeaking has been shown to be detrimental to wildlife in the river reaches downstream of hydr...
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ftmdpi:oai:mdpi.com:/2073-4441/12/6/1585/ 2023-08-20T04:08:46+02:00 Case Study of Transient Dynamics in a Bypass Reach Anton J. Burman Anders G. Andersson J. Gunnar I. Hellström Kristian Angele agris 2020-06-02 application/pdf https://doi.org/10.3390/w12061585 EN eng Multidisciplinary Digital Publishing Institute Hydraulics and Hydrodynamics https://dx.doi.org/10.3390/w12061585 https://creativecommons.org/licenses/by/4.0/ Water; Volume 12; Issue 6; Pages: 1585 inherent damping hydropeaking river dynamics hydraulic modeling delft3d Text 2020 ftmdpi https://doi.org/10.3390/w12061585 2023-07-31T23:35:13Z The operating conditions of Nordic hydropower plants are expected to change in the coming years to work more in conjunction with intermittent power production, causing more frequent hydropeaking events. Hydropeaking has been shown to be detrimental to wildlife in the river reaches downstream of hydropower plants. In this work, we investigate how different possible future hydropeaking scenarios affect the water surface elevation dynamics in a bypass reach in the Ume River in northern Sweden. The river dynamics has been modeled using the open-source solver Delft3D. The numerical model was validated and calibrated with water-surface-elevation measurements. A hysteresis effect on the water surface elevation, varying with the downstream distance from the spillways, was seen in both the simulated and the measured data. Increasing the hydropeaking rate is shown to dampen the variation in water surface elevation and wetted area in the most downstream parts of the reach, which could have positive effects on habitat and bed stability compared to slower rates in that region. Text Northern Sweden MDPI Open Access Publishing Water 12 6 1585 |
institution |
Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
inherent damping hydropeaking river dynamics hydraulic modeling delft3d |
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inherent damping hydropeaking river dynamics hydraulic modeling delft3d Anton J. Burman Anders G. Andersson J. Gunnar I. Hellström Kristian Angele Case Study of Transient Dynamics in a Bypass Reach |
topic_facet |
inherent damping hydropeaking river dynamics hydraulic modeling delft3d |
description |
The operating conditions of Nordic hydropower plants are expected to change in the coming years to work more in conjunction with intermittent power production, causing more frequent hydropeaking events. Hydropeaking has been shown to be detrimental to wildlife in the river reaches downstream of hydropower plants. In this work, we investigate how different possible future hydropeaking scenarios affect the water surface elevation dynamics in a bypass reach in the Ume River in northern Sweden. The river dynamics has been modeled using the open-source solver Delft3D. The numerical model was validated and calibrated with water-surface-elevation measurements. A hysteresis effect on the water surface elevation, varying with the downstream distance from the spillways, was seen in both the simulated and the measured data. Increasing the hydropeaking rate is shown to dampen the variation in water surface elevation and wetted area in the most downstream parts of the reach, which could have positive effects on habitat and bed stability compared to slower rates in that region. |
format |
Text |
author |
Anton J. Burman Anders G. Andersson J. Gunnar I. Hellström Kristian Angele |
author_facet |
Anton J. Burman Anders G. Andersson J. Gunnar I. Hellström Kristian Angele |
author_sort |
Anton J. Burman |
title |
Case Study of Transient Dynamics in a Bypass Reach |
title_short |
Case Study of Transient Dynamics in a Bypass Reach |
title_full |
Case Study of Transient Dynamics in a Bypass Reach |
title_fullStr |
Case Study of Transient Dynamics in a Bypass Reach |
title_full_unstemmed |
Case Study of Transient Dynamics in a Bypass Reach |
title_sort |
case study of transient dynamics in a bypass reach |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/w12061585 |
op_coverage |
agris |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Water; Volume 12; Issue 6; Pages: 1585 |
op_relation |
Hydraulics and Hydrodynamics https://dx.doi.org/10.3390/w12061585 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/w12061585 |
container_title |
Water |
container_volume |
12 |
container_issue |
6 |
container_start_page |
1585 |
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1774721257770582016 |