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Vibration Sensitivity of Large Turbine Generator Shaft Trains to Unbalance Read chapter Read first chapter

2015 | OriginalPaper | Chapter

Numerical and Experimental Investigation of Rotor-Simulator in Foil Gasdynamic Bearings for Compact Gas Turbine

Authors : Joury Temis, Mikhail Temis, Andrey Egorov, Valentin Gavrilov

Published in: Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Publisher: Springer International Publishing

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Abstract

Numerical and experimental investigation of dynamics for simulator of compact gas turbine rotor in foil gasdynamic bearings is carried out. For definition of influence on rotor-simulator—gas bearings—casing system dynamics from main parameters such as rotor imbalance and structural damping, the series of rotor, casing, foil bearings and gas lubrication finite-element models are developed. Influence of gas foil bearing design and temperature state is considered. In experimental part of work the rotor floating up in bearings conditions are determined for operation in normal conditions and at 420 °C heat. Estimation of coatings in support durability was carried out at cyclic start-stops. For calculated and experimentally obtained rotor orbits the system main frequency characteristics were determined using spectrum analysis. Rotor system sensitivity for changing main parameters is shown. Numerical simulation and experimental results provided additional tools for analysis of effects observed in experiment and for numerical model verification.

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previous chapter The Dynamics of the Laboratory Rotor Founded on the Gas Foil Bearings—Numerical Analysis
next chapter Non-linear Stability Analysis of a Modified Gas Foil Bearing Structure
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Metadata
Title
Numerical and Experimental Investigation of Rotor-Simulator in Foil Gasdynamic Bearings for Compact Gas Turbine
Authors
Joury Temis
Mikhail Temis
Andrey Egorov
Valentin Gavrilov
Copyright Year
2015
Book
Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Print ISBN: 978-3-319-06589-2

Electronic ISBN: 978-3-319-06590-8

Copyright Year: 2015

DOI
https://doi.org/10.1007/978-3-319-06590-8_102

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