Improved delayed detached eddy simulation of agard wing flutter with fully coupled fluid-structure interaction

Purvic Patel, Gecheng Zha

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

Abstract

The Shear Stress Transport model based improved delayed detached eddy simulation of the AGARD Wing 445.6 is performed at the subsonic, transonic and supersonic flow with high order shock capturing schemes. An implicit unfactored Gauss-Seidel line iteration scheme is used to solve the compressible, filtered Navier-Stokes equations. The flow solver and the modal form structural solver utilize the dual time-stepping scheme to achieve fully coupled fluid-structural interaction via successive iterations using a pseudo time step. The LES sub-grid length scale based on the vorticity aligned with a grid line is used to overcome the standard sub-grid length scale’s delayed flow transition problem. The predicted flutter boundary agrees well with the experiment at different Mach numbers, including the supersonic flow where the traditional RANS methods over-predict the flutter velocity index and frequency. At the transonic and supersonic flow, the torsional mode generalized displacement is decreased due to the shock oscillations over the suction and pressure surface of the wing. At the flutter boundary, no flow separation is observed at different Mach numbers.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-16
Number of pages16
ISBN (Print)9781624106095
StatePublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: Jan 11 2021Jan 15 2021

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period1/11/211/15/21

ASJC Scopus subject areas

  • Aerospace Engineering

Fingerprint

Dive into the research topics of 'Improved delayed detached eddy simulation of agard wing flutter with fully coupled fluid-structure interaction'. Together they form a unique fingerprint.

Cite this