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Development and Validation of a Partitioned Fluid-Structure Solver for Transonic Panel Flutter with Focus on Boundary Layer Effects

Alder, Marko (2014) Development and Validation of a Partitioned Fluid-Structure Solver for Transonic Panel Flutter with Focus on Boundary Layer Effects. In: AIAA 44th Computational Fluid Dynamics Conference (ISSN: 0001-1452). 44th AIAA Fluid Dynamics Conference, 16.-20. Jun. 2014, Atlanta. ISSN 0001-1452

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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 is presented in this paper for high subsonic and low supersonic Mach numbers. This comprises a discussion of available results from literature with the objective to propose a guideline for validation purposes of partitioned panel flutter solvers. Thereupon the code is used for studies on the impact of turbulent boundary layer characteristics on aeroelastic stability boundaries and post-flutter. An evaluation of flutter modes and frequencies in the post-flutter domain as well as a discussion of the corresponding flow phenomena is presented.

Item URL in elib:https://elib.dlr.de/89924/
Document Type:Conference or Workshop Item (Speech)
Title:Development and Validation of a Partitioned Fluid-Structure Solver for Transonic Panel Flutter with Focus on Boundary Layer Effects
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Alder, Markomarko.alder (at) dlr.deUNSPECIFIED
Date:June 2014
Journal or Publication Title:AIAA 44th Computational Fluid Dynamics Conference (ISSN: 0001-1452)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISSN:0001-1452
Status:Published
Keywords:Panel flutter, transonic, fluid-structure coupling, unsteady aerodynamics
Event Title:44th AIAA Fluid Dynamics Conference
Event Location:Atlanta
Event Type:international Conference
Event Dates:16.-20. Jun. 2014
Organizer:AIAA Aviation
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 - Leitprojekt - Forschungsverbund Oberstufe
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Alder, Marko
Deposited On:03 Sep 2014 13:29
Last Modified:31 Jul 2019 19:47

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