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Simulation Environment for CFD-based Aeroelastic Analysis of Aircraft

Reimer, Lars (2020) Simulation Environment for CFD-based Aeroelastic Analysis of Aircraft. Dissertation, RWTH Aachen University.

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Offizielle URL: https://publications.rwth-aachen.de/record/807644

Kurzfassung

The development, validation and application of a RANS-CFD-based simulation environment for aeroelastic analysis of aircraft in the time domain are presented. The core element of the simulation environment, developed in the sense of a partitioned approach, is the Aeroelastic Coupling Module (ACM). It couples specialized high-fidelity methods for the individual problems of aerodynamics, structural dynamics, and CFD mesh deformation to a versatile overall aeroelastic solver. Central validation test case is the HIRENASD experiment---a static and dynamic aeroelastic wind tunnel test campaign in transonic flow at real flight Reynolds numbers. The agreement of the numerical predictions with measurements of the static tests is evaluated in detail for independent variations of angle of attack, Mach number, load factor and Reynolds number, as well as for different turbulence models; shock-boundary layer interactions and flow separation behavior are analyzed. In the dynamic tests with excitation of the model in selected natural vibration modes, the separate influences of CFD mesh refinement, turbulence model, Mach number and Reynolds number on the agreement with the experiment are investigated. In addition to simulations with prescribed experimental model vibration, results from fully coupled simulations of the dynamic HIRENASD experiments are presented---simulations in which the model excitation from the aeroelastic equilibrium to the stationary harmonic oscillation is simulated exactly according to the model excitation procedure in the wind tunnel tests. In all cases, the essential effects observed in the experiments are predicted very precisely by the simulation, even the increased aerodynamic damping at high flight Reynolds numbers.

elib-URL des Eintrags:https://elib.dlr.de/140225/
Dokumentart:Hochschulschrift (Dissertation)
Titel:Simulation Environment for CFD-based Aeroelastic Analysis of Aircraft
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Reimer, LarsDLR-AS-CASENICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2020
Erschienen in:Verlag Dr. Hut
Referierte Publikation:Ja
Open Access:Nein
Seitenanzahl:254
Status:veröffentlicht
Stichwörter:computational aeroelasticity ; fluid-structure interaction ; mesh deformation ; load/deformation interpolation ; temporal coupling ; partitioned methods ; HIRENASD
Institution:RWTH Aachen University
Abteilung:Chair for Computational Analysis of Technical Systems
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation und Validierung (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > CASE, BS
Hinterlegt von: Reimer, Lars
Hinterlegt am:11 Jan 2021 11:19
Letzte Änderung:11 Jan 2021 11:19

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