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Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part II: Method Application and Numerical Investigation

Author

Listed:
  • Eduard Doujak

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Julian Unterluggauer

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Gerald Fillinger

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Armin Nocker

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Franz Haller

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Michael Maier

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

  • Simon Stadler

    (Research Group, Fluid-Flow Machinery, Institute for Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9/302, 1060 Vienna, Austria)

Abstract

Part I of the publication series addressed the fundamentals of lifetime assessment of prototype Francis turbines. This paper (Part II) focuses on the numerical part of the procedure. The essential steps and requirements shall be presented (background). The starting points for the numerical considerations are the pressure fields of the transient CFD simulations, which are exported per time step and applied to the existing structure via a fluid–structure interaction. That enables a transient mechanical stress calculation to be conducted, resulting in the fatigue analysis of the component to estimate the remaining lifetime. The individual model requirements should be represented accordingly and applied to the prototype facility (method). The results obtained from this application should be discussed and evaluated. It has to be mentioned that the validation of the numerical results will be performed at Part IV of this publication series (results). The present paper will end up discussing the results and conclusions about further data processing (Conclusion).

Suggested Citation

  • Eduard Doujak & Julian Unterluggauer & Gerald Fillinger & Armin Nocker & Franz Haller & Michael Maier & Simon Stadler, 2022. "Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part II: Method Application and Numerical Investigation," Energies, MDPI, vol. 15(3), pages 1-34, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:3:p:1165-:d:742360
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    Cited by:

    1. Eduard Doujak & Anton Maly & Julian Unterluggauer & Franz Haller & Michael Maier & Christian Blasbichler & Simon Stadler, 2023. "Fatigue Strength Analysis of a Prototype Francis Turbine in a Multilevel Lifetime Assessment Procedure Part III: Instrumentation and Prototype Site Measurement," Energies, MDPI, vol. 16(16), pages 1-39, August.

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