Model order reduction technique applied on harmonic analysis of a submerged vibrating blade

• Autorzy: Tengs E. , Charrassier F. , Holst M. , Storli P.

Identyfikatory

DOI

10.2478/ijame-2019-0009

• Języki publikacji: EN

Abstrakty

EN

As part of an ongoing study into hydropower runner failure, a submerged, vibrating blade is investigated both experimentally and numerically. The numerical simulations performed are fully coupled acoustic-structural simulations in ANSYS Mechanical. In order to speed up the simulations, a model order reduction technique based on Krylov subspaces is implemented. This paper presents a comparison between the full ANSYS harmonic response and the reduced order model, and shows excellent agreement. The speedup factor obtained by using the reduced order model is shown to be between one and two orders of magnitude. The number of dimensions in the reduced subspace needed for accurate results is investigated, and confirms what is found in other studies on similar model order reduction applications. In addition, experimental results are available for validation, and show good match when not too far from the resonance peak.

Słowa kluczowe

EN

model order reduction; FSI; vibration; harmonic response

PL

wibracje; harmoniczne; silnik FSI

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2019
• Tom: Vol. 24, no. 1
• Strony: 131--142
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wykr.

Twórcy

autor

Tengs E.

• The Waterpower Laboratory, Norwegian University of Science and Technology 7491 Trondheim, NORWAY EDR&Medeso, Leif Tronstads Plass 4 1337 Sandvika, NORWAY

autor

Charrassier F.

• EDR&Medeso, Leif Tronstads Plass 4 1337 Sandvika, NORWAY

autor

Holst M.

• EDR&Medeso, Leif Tronstads Plass 4 1337 Sandvika, NORWAY

autor

Storli P.

• The Waterpower Laboratory, Norwegian University of Science and Technology 7491 Trondheim, NORWAY

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)