Detached eddy simulation of transonic rotor stall flutter using a fully coupled fluid-structure interaction

I. M. Hongsik, Xiangying Chen, Gecheng Zha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Detached eddy simulation of an aeroelastic self-excited instability, flutter in NASA Rotor 67 is conducted using a fully coupled fluid/structre interaction. Time accurate compressible 3D Navier-Stokes equations are solved with a system of 5 decoupled modal equations in a fully coupled manner. The 5th order WENO scheme for the inviscid flux and the 4th order central differencing for the viscous flux are used to accurately capture interactions between the flow and vibrating blades with the DES(detached eddy simulation) of turbulence. A moving mesh concept that can improve mesh quality over the rotor tip clearance was implemented. Flutter simulations were first conducted from choke to stall using 4 blade passages. Stall flutter initiated at rotating stall onset, grows dramatically with resonance. The frequency analysis shows that resonance occurs at the first mode of the rotor blade. Before stall, the predicted responses of rotor blades decayed with time, resulting in no flutter. Full annulus simulation at peak point verifies that one can use the multi-passage approach with periodic boundary for the flutter prediction.

Original languageEnglish (US)
Title of host publicationASME 2011 Turbo Expo
Subtitle of host publicationTurbine Technical Conference and Exposition, GT2011
Pages1217-1230
Number of pages14
EditionPARTS A AND B
DOIs
StatePublished - Dec 1 2011
EventASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 - Vancouver, BC, Canada
Duration: Jun 6 2011Jun 10 2011

Publication series

NameProceedings of the ASME Turbo Expo
NumberPARTS A AND B
Volume6

Other

OtherASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011
CountryCanada
CityVancouver, BC
Period6/6/116/10/11

ASJC Scopus subject areas

  • Engineering(all)

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    Hongsik, I. M., Chen, X., & Zha, G. (2011). Detached eddy simulation of transonic rotor stall flutter using a fully coupled fluid-structure interaction. In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 (PARTS A AND B ed., pp. 1217-1230). (Proceedings of the ASME Turbo Expo; Vol. 6, No. PARTS A AND B). https://doi.org/10.1115/GT2011-45437