Influence of seal compliance on the dynamics of an unbalanced rotor - 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery Access content directly
Conference Papers Year : 2017

Influence of seal compliance on the dynamics of an unbalanced rotor

Abstract

Compliant hybrid seals offer a comparatively new approach to reduce leakage in turbo machinery, leading to higher efficiency even under transient operation. These properties are achieved by a reduced sealing gap along with added seal flexibility to minimize the risk of surface rubbing. is contribution investigates the rotordynamic properties by means of a minimal model consisting of a Jeffcott rotor and a visco-elastically supported seal. The steady state stability, the bifurcation behavior and the resulting limit cycles of an unbalanced rotor are being discussed and compared to the results for a balanced rotor and the case of a stiff seal support. The compliant support can either enlarge or reduce the stable operation range depending on design parameters. The permitted seal movability minimizes the risk of rotor-seal contact during passage through the resonance. Rotor and seal orbits induced by unbalance can loose their stability via Neimark-Sacker bifurcations but then also resynchronize.
Fichier principal
Vignette du fichier
059.finalpaper.pdf (317.96 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02410301 , version 1 (13-12-2019)

Identifiers

  • HAL Id : hal-02410301 , version 1

Cite

Simon Bäuerle, Hartmut Hetzler. Influence of seal compliance on the dynamics of an unbalanced rotor. 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC2017), Dec 2017, Maui, United States. ⟨hal-02410301⟩

Collections

ISROMAC2017
112 View
30 Download

Share

Gmail Facebook X LinkedIn More