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A Mapping Procedure for the Computation of Flow-Induced Vibrations in Turbomachinery

: Wirth, N.; Oeckerath, A.


Griebel, Michael; Schüller, Anton; Schweitzer, Marc Alexander:
Scientific Computing and Algorithms in Industrial Simulation : Projects and Products of Fraunhofer SCAI
Cham: Springer International Publishing, 2017
ISBN: 978-3-319-62457-0 (Print)
ISBN: 978-3-319-62458-7 (Online)
Aufsatz in Buch
Fraunhofer SCAI ()

In this paper a mapping procedure for the simulation of flow-induced vibrations in turbomachinery is presented. The exciting pressure fluctuations are computed in the frequency domain using harmonic CFD methods and are mapped to a structural FEM model of the considered turbine component utilizing the {Fraunhofer SCAI} software MpCCI FSIMapper. The frequency response analysis of the structure gives information about the resulting vibration amplitudes and allows realistic fatigue estimations of the flow-excited turbine component. The mapping process is designed for the special needs of applications using cyclic symmetric simulation models. The described method is applied to a two-stage axial turbine.