Prediction of wing flutter boundary using high fidelity delayed detached eddy simulation

Jia Ye Gan, Hong Sik Im, Xiang Ying Chen, Ge Cheng Zha, Crystal L. Pasiliao

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

Abstract

This paper conducts Delayed Detached Eddy Simulation(DDES) of a 3D wing flutter with free stream Mach number varied from subsonic to supersonic using a fully coupled fluid/structure interaction (FSI). Unsteady 3D compressible Navier-Stokes equations are solved with a system of 5 decoupled structure modal equations in a fully coupled manner. The low diffusion E-CUSP scheme with a 5th order WENO reconstruction for the inviscid flux and a set of 4th order central differencing for the viscous terms are used to accurately capture the shock wave/turbulent boundary layer interaction of the vibrating wing. The predicted flutter boundaries at different free stream Mach numbers achieve very good agreement with experiment. It appears that the transonic dip phenomenon is due to the anticlimax contribution of the second mode, which is caused by the complicated shock oscillation on the wing.

Original languageEnglish (US)
Title of host publication56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624103421
DOIs
StatePublished - 2015
Event56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Conference

Conference56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
Country/TerritoryUnited States
CityKissimmee
Period1/5/151/9/15

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Mechanics of Materials
  • Building and Construction

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