Spillway flow behaviours with and without aeration
Cavitation has been known for a long time to cause damages in spillways athydropower plants, aerators are therefore often implemented to prevent this.The majority of the hydropower plants in Sweden are installed in the northernpart of the country. In this environment, construction details like vents...
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KTH, Teknisk mekanik
2022
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ftkthstockholm:oai:DiVA.org:kth-315051 2023-05-15T17:44:40+02:00 Spillway flow behaviours with and without aeration Köhler, Noel 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-315051 eng eng KTH, Teknisk mekanik TRITA-SCI-GRU 2022:163 http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-315051 info:eu-repo/semantics/openAccess Hydropower Aeration Computional Fluid Dynamics (CFD) Spillway Subpressure Black Water Spreading Engineering and Technology Teknik och teknologier Student thesis info:eu-repo/semantics/bachelorThesis text 2022 ftkthstockholm 2022-08-11T12:42:20Z Cavitation has been known for a long time to cause damages in spillways athydropower plants, aerators are therefore often implemented to prevent this.The majority of the hydropower plants in Sweden are installed in the northernpart of the country. In this environment, construction details like vents areexposed to rain, snow, leaves, and other difficult nature conditions for a majorpart of the year. It is therefore of interest to see what will happen if the ventsare sealed.Similar experiments have earlier been investigated at Vattenfall AB, oneof the largest energy companies in Sweden. The investigation consists ofcase studies with multiple variables, closed and open vents, low and highwater levels. The calculations are done with help from computational fluiddynamics and the goal is to see how parameters such as pressure, spreading,and horizontal length change when the aerator is sealed compared to open.The calculations were also carried out in a way so tests in the future can bedone by Vattenfall to validate the results from the computational simulations.The geometry of the hydropower plant is taken from a plant in Skellefteälvenin northern Sweden. Bachelor Thesis Northern Sweden Royal Institute of Technology, Stockholm: KTHs Publication Database DiVA |
institution |
Open Polar |
collection |
Royal Institute of Technology, Stockholm: KTHs Publication Database DiVA |
op_collection_id |
ftkthstockholm |
language |
English |
topic |
Hydropower Aeration Computional Fluid Dynamics (CFD) Spillway Subpressure Black Water Spreading Engineering and Technology Teknik och teknologier |
spellingShingle |
Hydropower Aeration Computional Fluid Dynamics (CFD) Spillway Subpressure Black Water Spreading Engineering and Technology Teknik och teknologier Köhler, Noel Spillway flow behaviours with and without aeration |
topic_facet |
Hydropower Aeration Computional Fluid Dynamics (CFD) Spillway Subpressure Black Water Spreading Engineering and Technology Teknik och teknologier |
description |
Cavitation has been known for a long time to cause damages in spillways athydropower plants, aerators are therefore often implemented to prevent this.The majority of the hydropower plants in Sweden are installed in the northernpart of the country. In this environment, construction details like vents areexposed to rain, snow, leaves, and other difficult nature conditions for a majorpart of the year. It is therefore of interest to see what will happen if the ventsare sealed.Similar experiments have earlier been investigated at Vattenfall AB, oneof the largest energy companies in Sweden. The investigation consists ofcase studies with multiple variables, closed and open vents, low and highwater levels. The calculations are done with help from computational fluiddynamics and the goal is to see how parameters such as pressure, spreading,and horizontal length change when the aerator is sealed compared to open.The calculations were also carried out in a way so tests in the future can bedone by Vattenfall to validate the results from the computational simulations.The geometry of the hydropower plant is taken from a plant in Skellefteälvenin northern Sweden. |
format |
Bachelor Thesis |
author |
Köhler, Noel |
author_facet |
Köhler, Noel |
author_sort |
Köhler, Noel |
title |
Spillway flow behaviours with and without aeration |
title_short |
Spillway flow behaviours with and without aeration |
title_full |
Spillway flow behaviours with and without aeration |
title_fullStr |
Spillway flow behaviours with and without aeration |
title_full_unstemmed |
Spillway flow behaviours with and without aeration |
title_sort |
spillway flow behaviours with and without aeration |
publisher |
KTH, Teknisk mekanik |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-315051 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
TRITA-SCI-GRU 2022:163 http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-315051 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766146942703763456 |