Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development
Electricity generation is becoming increasingly flexible in Europe these days. Due to the integration of new renewable energy sources like wind and photovoltaic, other conventional resources, such as hydropower, operate within a brought range around their best efficiency point, thus leading to highe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/3/1148 |
| _version_ | 1797487966732419072 |
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| author | Eduard Doujak Simon Stadler Gerald Fillinger Franz Haller Michael Maier Armin Nocker Johannes Gaßner Julian Unterluggauer |
| author_facet | Eduard Doujak Simon Stadler Gerald Fillinger Franz Haller Michael Maier Armin Nocker Johannes Gaßner Julian Unterluggauer |
| author_sort | Eduard Doujak |
| collection | DOAJ |
| description | Electricity generation is becoming increasingly flexible in Europe these days. Due to the integration of new renewable energy sources like wind and photovoltaic, other conventional resources, such as hydropower, operate within a brought range around their best efficiency point, thus leading to higher dynamical loads at the water-bearing parts, especially at the runner and the guide vanes (background). By scrutinizing the literature of the past years, one could summarize the outcome in that way, that research projects focused either on model measurements with higher visual accessibility or, less often, on prototype measurements in existing power plants. Today prototype measurements are performed, if possible, to eliminate scaling effects. Moreover, increasing computing power allows prototype simulations to be carried out within a reasonable time. At the acknowledged research projects, prototype and model measurements and numerical simulations have been performed to identify the main gaps in Francis turbines’ lifetime assessment (methods). One special outcome of these investigations was the impracticality of numerical simulations and calculation time, respectively, of start and stop events. Therefore, a prototype measurement with focus at this operating point should be performed to provide more data and an insight into the unit’s behavior. The future goal is a comprehensive machine unit lifetime assessment of the water-bearing parts in a Francis turbine machine set (results). This complex task needs several steps, beginning from measurements through simulations towards data processing. A particular challenge is posed, when the assessment methods are applied to old machines. |
| first_indexed | 2024-03-09T23:55:21Z |
| format | Article |
| id | doaj.art-4d543b8e63d84ffaaa901118475f5664 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T23:55:21Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-4d543b8e63d84ffaaa901118475f56642023-11-23T16:26:00ZengMDPI AGEnergies1996-10732022-02-01153114810.3390/en15031148Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure DevelopmentEduard Doujak0Simon Stadler1Gerald Fillinger2Franz Haller3Michael Maier4Armin Nocker5Johannes Gaßner6Julian Unterluggauer7Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaResearch Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien Getreidemarkt 9/302, 1060 Vienna, AustriaElectricity generation is becoming increasingly flexible in Europe these days. Due to the integration of new renewable energy sources like wind and photovoltaic, other conventional resources, such as hydropower, operate within a brought range around their best efficiency point, thus leading to higher dynamical loads at the water-bearing parts, especially at the runner and the guide vanes (background). By scrutinizing the literature of the past years, one could summarize the outcome in that way, that research projects focused either on model measurements with higher visual accessibility or, less often, on prototype measurements in existing power plants. Today prototype measurements are performed, if possible, to eliminate scaling effects. Moreover, increasing computing power allows prototype simulations to be carried out within a reasonable time. At the acknowledged research projects, prototype and model measurements and numerical simulations have been performed to identify the main gaps in Francis turbines’ lifetime assessment (methods). One special outcome of these investigations was the impracticality of numerical simulations and calculation time, respectively, of start and stop events. Therefore, a prototype measurement with focus at this operating point should be performed to provide more data and an insight into the unit’s behavior. The future goal is a comprehensive machine unit lifetime assessment of the water-bearing parts in a Francis turbine machine set (results). This complex task needs several steps, beginning from measurements through simulations towards data processing. A particular challenge is posed, when the assessment methods are applied to old machines.https://www.mdpi.com/1996-1073/15/3/1148hydropowerhydraulic turbineslifetime assessmentmultilevel procedure |
| spellingShingle | Eduard Doujak Simon Stadler Gerald Fillinger Franz Haller Michael Maier Armin Nocker Johannes Gaßner Julian Unterluggauer Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development Energies hydropower hydraulic turbines lifetime assessment multilevel procedure |
| title | Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development |
| title_full | Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development |
| title_fullStr | Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development |
| title_full_unstemmed | Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development |
| title_short | Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part I: Background, Theory and Assessment Procedure Development |
| title_sort | fatigue strength analysis of a prototype francis turbine in a multilevel lifetime assessment procedure part i background theory and assessment procedure development |
| topic | hydropower hydraulic turbines lifetime assessment multilevel procedure |
| url | https://www.mdpi.com/1996-1073/15/3/1148 |
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