A methodology for a coupled structural-computational fluid dynamics analysis of compressor rotor blades subjected to ice impact with uncertain impactor parameters

Research output: Contribution to journalResearch articleContributedpeer-review

Abstract

A method for a coupled structural-computational fluid dynamics (CFD) analysis of a compressor rotor blade subjected to an ice impact scenario is investigated to assess the impact related blade deformations from a structural and fluid-dynamics perspective. On the basis of a probabilistic approach, in total 50 impact scenarios are derived for this study. In a first step, the numerical structural model based on finite elements is discussed, including several parameter variations like impact location, ice diameter, ice density, and rotor speed. Different analysis steps are subsequently carried out using LS-DYNA implicit/explicit on a high performance computing cluster. Resulting blade deformations are evaluated in terms of local plastic deformation, cup size and modal parameters in comparison to the undamaged reference structure. The resultant postimpact blade geometry is extracted from the result data and passed to the CFD simulation setup in a fully automated manner. Based on this deformed structural mesh data, the fluid mesh is morphed via a radial basis function approach and analyzed with CFD. Finally, an uncertainty quantification study is performed to assess the variability of results with regard to the definition of the ice impactor.

Details

Original languageEnglish
Article number031001 (GTP-22-1415)
Number of pages8
JournalJournal of Engineering for Gas Turbines and Power
Volume145
Issue number3
Early online date5 Dec 2022
Publication statusE-pub ahead of print - 5 Dec 2022
Peer-reviewedYes

Conference

TitleASME Turbo Expo 2022
Conference number
Duration13 - 17 June 2022
Degree of recognitionInternational event
Location
CityRotterdam
CountryNetherlands

External IDs

Mendeley 70da3046-9105-3265-ab3e-4943b8fe5852
unpaywall 10.1115/1.4055687
Scopus 85144608809

Keywords

Keywords

  • Blades, Compressors, Computational fluid dynamics, Ice, Rotors, Deformation, Density, Finite Element Analysis, Fluid dynamics, Fluids, Geometry, Simulation, Uncertainty Quantification