Transient 3D CFD Simulation of a Pelton turbine – A state of the art approach for Pelton turbine development and optimisation

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

The complexity of the flow structure in Pelton turbines makes it challenging to gain a detailed insight into the local flow processes. However, CFD methods offer vast potential for developing and optimising Pelton turbines due to these complex flow conditions. In a comprehensive examination, a six-nozzle prototype Pelton turbine with 19 buckets has been investigated using 3D CFD simulations. First, the steady simulations of the manifold and the unsteady runner simulation have been performed with a mesh-based, commercial CFD code, whereby a two-equation turbulence model and the homogeneous two-phase model were used. Then, to limit the simulation time and the computational cost, symmetry was applied in the runner simulation, and also a sophisticated meshing strategy. Subsequently, the simulation results are analysed. The examination of the manifold provided a detailed insight into the occurrence of losses and local flow conditions, especially upstream the nozzle, which allows for a better understanding of the jet shape. Furthermore, the results of the runner simulation were analysed with special regard to the jet-bucket interaction from start to end of the impingement cycle of a particular bucket. Finally, the enhancement potential could be derived from the summary.
Translated title of the contributionTransiente 3D CFD Simulation einer Pelton Turbine – Ein Ansatz für die Entwicklung und die Optimierung einer Pelton Turbine nach dem Stand der Technik
Original languageEnglish
Title of host publicationProceedings of the Conference on Modelling Fluid Flow CMFF’22
EditorsJ. Vad
Place of PublicationBudapest
PublisherBudapest University of Technology and Economics
Pages258-266
Number of pages9
ISBN (Electronic)978-963-421-881-4
Publication statusPublished - 2 Sep 2022
Event18th International Conference on Fluid Flow Technologies: CMFF 2022 - Budapest, Hungary
Duration: 30 Aug 20222 Sep 2022

Conference

Conference18th International Conference on Fluid Flow Technologies
Abbreviated titleCMFF '22
Country/TerritoryHungary
CityBudapest
Period30/08/222/09/22

ASJC Scopus subject areas

  • Engineering(all)

Fields of Expertise

  • Sustainable Systems

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