Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine

Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine

This paper is focused on the guide vane cascade as one of the most crucial stationary sub-systems of the hydraulic turbine, which needs to provide efficient inflow hydraulic conditions to the runner. The guide vanes direct the flow from the spiral casing and the stay vanes towards the runner, regula...

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Main Authors: Filip Stojkovski, Marija Lazarevikj, Zoran Markov, Igor Iliev, Ole Gunnar Dahlhaug
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Energies
Subjects:
guide vanes
parametric design
Francis turbine
CFD
Online Access:https://www.mdpi.com/1996-1073/14/9/2667
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spelling doaj-60bb4a225cb74388a4f605663e8236032021-05-31T23:20:15ZengMDPI AGEnergies1996-10732021-05-01142667266710.3390/en14092667Constraints of Parametrically Defined Guide Vanes for a High-Head Francis TurbineFilip Stojkovski0Marija Lazarevikj1Zoran Markov2Igor Iliev3Ole Gunnar Dahlhaug4Faculty of Mechanical Engineering, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North MacedoniaFaculty of Mechanical Engineering, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North MacedoniaFaculty of Mechanical Engineering, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North MacedoniaWaterpower Laboratory, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), Alfred Getz’ Vei 4, 7034 Trondheim, NorwayWaterpower Laboratory, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), Alfred Getz’ Vei 4, 7034 Trondheim, NorwayThis paper is focused on the guide vane cascade as one of the most crucial stationary sub-systems of the hydraulic turbine, which needs to provide efficient inflow hydraulic conditions to the runner. The guide vanes direct the flow from the spiral casing and the stay vanes towards the runner, regulating the desired discharge. A parametric design tool with normalized geometrical constraints was created in MATLAB, suitable for generating guide vane cascade geometries for Francis turbines. The goal is to determine the limits of these constraints, which will lead to future faster prediction of initial guide vane configurations in the turbine optimal operating region. Several geometries are developed using preliminary design data of the turbine and are investigated using CFD simulations close to the best efficiency point (BEP) of the turbine. This research is part of the Horizon-2020—HydroFlex project led by the Norwegian University of Science and Technology (NTNU), focusing on the development of a flexible hydropower generation.https://www.mdpi.com/1996-1073/14/9/2667guide vanesparametric designFrancis turbineCFD
collection DOAJ
language English
format Article
sources DOAJ
author Filip Stojkovski
Marija Lazarevikj
Zoran Markov
Igor Iliev
Ole Gunnar Dahlhaug
spellingShingle Filip Stojkovski
Marija Lazarevikj
Zoran Markov
Igor Iliev
Ole Gunnar Dahlhaug
Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
Energies
guide vanes
parametric design
Francis turbine
CFD
author_facet Filip Stojkovski
Marija Lazarevikj
Zoran Markov
Igor Iliev
Ole Gunnar Dahlhaug
author_sort Filip Stojkovski
title Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
title_short Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
title_full Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
title_fullStr Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
title_full_unstemmed Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine
title_sort constraints of parametrically defined guide vanes for a high-head francis turbine
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2021-05-01
description This paper is focused on the guide vane cascade as one of the most crucial stationary sub-systems of the hydraulic turbine, which needs to provide efficient inflow hydraulic conditions to the runner. The guide vanes direct the flow from the spiral casing and the stay vanes towards the runner, regulating the desired discharge. A parametric design tool with normalized geometrical constraints was created in MATLAB, suitable for generating guide vane cascade geometries for Francis turbines. The goal is to determine the limits of these constraints, which will lead to future faster prediction of initial guide vane configurations in the turbine optimal operating region. Several geometries are developed using preliminary design data of the turbine and are investigated using CFD simulations close to the best efficiency point (BEP) of the turbine. This research is part of the Horizon-2020—HydroFlex project led by the Norwegian University of Science and Technology (NTNU), focusing on the development of a flexible hydropower generation.
topic guide vanes
parametric design
Francis turbine
CFD
url https://www.mdpi.com/1996-1073/14/9/2667
work_keys_str_mv AT filipstojkovski constraintsofparametricallydefinedguidevanesforahighheadfrancisturbine
AT marijalazarevikj constraintsofparametricallydefinedguidevanesforahighheadfrancisturbine
AT zoranmarkov constraintsofparametricallydefinedguidevanesforahighheadfrancisturbine
AT igoriliev constraintsofparametricallydefinedguidevanesforahighheadfrancisturbine
AT olegunnardahlhaug constraintsofparametricallydefinedguidevanesforahighheadfrancisturbine
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