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Development and Validation of a Fluid–Structure Solver for Transonic Panel Flutter

Alder, Marko (2015) Development and Validation of a Fluid–Structure Solver for Transonic Panel Flutter. AIAA Journal, 53 (12), pp. 3509-3521. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.J054013 ISSN 0001-1452

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.J054013

Abstract

A partitioned fluid–structure coupling code for transonic panel flutter has been developed and validated. The Reynolds-averaged Navier–Stokes equations are solved numerically by means of an implicit finite volume method to account for nonlinear aerodynamics, as there are shock waves and a viscous boundary layer at the panel surface. An implicit finite element formulation of the structural equations, as well as a Galerkin solution of the von Kármán plate equation are employed to solve elastic panel deformations with respect to geometric nonlinearities. A detailed validation process has shown good agreement with results from the literature for high subsonic and low supersonic Mach numbers. Thereby, a recent comparison between theory and experiment is confirmed. The validated solver is then used for further studies focusing on the impact of turbulent boundary layers on aeroelastic stability boundaries and instabilities. An increase in aerodynamic damping due to a viscous boundary layer is identified by an increase of the aeroelastic stability boundary. Furthermore, a significant damping on high flutter frequencies and mode shapes is revealed. The application of either a one-equation or two-equation turbulence model did not cause any major deviations in the results.

Item URL in elib:https://elib.dlr.de/99501/
Document Type:Article
Title:Development and Validation of a Fluid–Structure Solver for Transonic Panel Flutter
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Alder, Markomarko.alder (at) dlr.deUNSPECIFIED
Date:17 November 2015
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:53
DOI :10.2514/1.J054013
Page Range:pp. 3509-3521
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0001-1452
Status:Published
Keywords:panel flutter; aeroelasticity; unsteady aerodynamics; boundary layer
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Alder, Marko
Deposited On:25 Nov 2015 10:04
Last Modified:08 Mar 2018 18:42

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