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2019 | OriginalPaper | Buchkapitel

Calculating Rotordynamic Coefficients of Liquid Annular Seals by CFD for Vibration Analysis and Validation at the Test Rig

verfasst von : Christian Wagner, Stephan Sinzig, Thomas Thümmel, Daniel Rixen

Erschienen in: Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM

Verlag: Springer International Publishing

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Abstract

This article presents a simulation methodology for calculating rotordynamic coefficients of liquid annular seals using the open source software OpenFOAM. Therefore, stationary fluid solutions for several boundary conditions are generated to represent the rotational shaft speed, the eccentricity and the whirling motion. Analyzing the acting forces in a whirling coordinate frame leads to a simple curve fit to determine the rotordynamic seal coefficients. The CFD approach is validated with an analytical solution and the coefficients of characteristic states are compared to literature results. Finally, the methodology is applied to our test rig’s geometry to calculate its dynamic behavior. The comparison between the simulated and measured behavior shows good agreement.

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Metadaten
Titel
Calculating Rotordynamic Coefficients of Liquid Annular Seals by CFD for Vibration Analysis and Validation at the Test Rig
verfasst von
Christian Wagner
Stephan Sinzig
Thomas Thümmel
Daniel Rixen
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-319-99262-4_29

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