A meshless method for subsonic stall flutter analysis of turbomachinery 3D blade cascade

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00549845" target="_blank" >RIV/61388998:_____/21:00549845 - isvavai.cz</a>
Result on the web
<a href="https://journals.pan.pl/dlibra/publication/139000/edition/120815/content" target="_blank" >https://journals.pan.pl/dlibra/publication/139000/edition/120815/content</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.24425/bpasts.2021.139000" target="_blank" >10.24425/bpasts.2021.139000</a>

Result language
angličtina
Original language name
A meshless method for subsonic stall flutter analysis of turbomachinery 3D blade cascade
Original language description
The analysis of subsonic stall flutter in turbomachinery blade cascade is carried out using a medium-fidelity reduced-order aeroelastic numerical model. The model is a type of field mesh-free approach and based on a hybrid boundary element method. The medium-fidelity flow solver is developed on the principle of viscous-inviscid two-way weak-coupling approach. The hybrid flow solver is employed to model separated flow and stall flutter in the 3D blade cascade at subsonic speed. The aerodynamic damping coefficient w.r.t. inter blade phase angle in traveling-wave mode is estimated along with other parameters. The same stability parameter is used to analyze the cascade flutter resistance regime. The estimated results are validated against experimental measurements as well as Navier-Stokes based high fidelity CFD model. The simulated results show good agreement with experimental data. Furthermore, the hybrid flow solver has managed to bring down the computational cost significantly as compared to mesh-based CFD models. Therefore, all the prime objectives of the research have been successfully achieved.n
Czech name
—
Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20302 - Applied mechanics

Project
<a href="/en/project/GA20-26779S" target="_blank" >GA20-26779S: Study of dynamic stall flutter instabilities and their consequences in turbomachinery application by mathematical, numerical and experimental methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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