Full three-dimensional rotor/stator interaction simulations in aircraft engines with time-dependent angular speed

Alain Batailly, Mathias Legrand, Christophe Pierre

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Modern aircraft engine designs feature reduced clearances that may initiate structural contacts between rotating and static components. A numerical strategy dedicated to the simulation of such interactions is here enriched in order to account for time-dependent angular speeds. This contribution first details the evolution of the numerical strategy before validating the developments by comparing numerical results with experimental observations made on an industrial test bench. Further, numerical investigations allow to assess the sensitivity of the numerical results to acceleration and deceleration rates. The results, obtained with and without abradable coating, underline the fundamental nonlinear nature of the analyzed system. It is found that the lower acceleration rates favor the arisal of interaction phenomena, and that the amplitudes of vibration at a given angular speed are generally lower when the blade decelerates.

Original languageEnglish (US)
Article number031202
JournalJournal of Engineering for Gas Turbines and Power
Volume139
Issue number3
DOIs
StatePublished - Mar 1 2017

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Aircraft engines
Stators
Rotors
Deceleration
Coatings

Cite this

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abstract = "Modern aircraft engine designs feature reduced clearances that may initiate structural contacts between rotating and static components. A numerical strategy dedicated to the simulation of such interactions is here enriched in order to account for time-dependent angular speeds. This contribution first details the evolution of the numerical strategy before validating the developments by comparing numerical results with experimental observations made on an industrial test bench. Further, numerical investigations allow to assess the sensitivity of the numerical results to acceleration and deceleration rates. The results, obtained with and without abradable coating, underline the fundamental nonlinear nature of the analyzed system. It is found that the lower acceleration rates favor the arisal of interaction phenomena, and that the amplitudes of vibration at a given angular speed are generally lower when the blade decelerates.",
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Full three-dimensional rotor/stator interaction simulations in aircraft engines with time-dependent angular speed. / Batailly, Alain; Legrand, Mathias; Pierre, Christophe.

In: Journal of Engineering for Gas Turbines and Power, Vol. 139, No. 3, 031202, 01.03.2017.

Research output: Contribution to journalArticle

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