Kersken, Hans-Peter und Frey, Christian und Voigt, Christian und Ashcroft, Graham (2010) Time-linearized and Time-accurate 3D RANS Methods for Aeroelastic Analysis in Turbomachinery. ASME TurboExpo 2010, 2010-06-14 - 2010-06-18, Glasgow, UK. doi: 10.1115/gt2010-22940.
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Kurzfassung
A computational method for performing aeroelastic analysis using either a time-linearized or an unsteady time-accurate solver for the compressible Reynolds averaged Navier-Stokes (RANS) equations is described. The time-linearized solver employs the assumption of small time-harmonic perturbations and is implemented via finite differences of the nonlinear flux routines of the time-accurate solver. The resulting linear system is solved using a parallelized Generalized Minimal Residual (GMRES) method with block-local preconditioning. The time accurate solver uses a dual time stepping algorithm for the solution of the unsteady RANS equations on a periodically moving computational grid. For either solver, and both flutter and forced response problems, a mapping algorithm has been developed to map structural eigenmodes, obtained from finite element structural analysis, from the surface mesh of the finite element structural solver to the surface mesh of the finite volume flow solver. Using the surface displacement data an elliptic mesh deformation algorithm, based on linear elasticity theory, is then used to compute the grid deformation vector field. The developed methods are validated first using standard configuration ten. Finally, for an ultra high bypass ratio fan the results of the timelinearized and the unsteady module are compared. The gain in prediction time using the linearized methods is highlighted.
elib-URL des Eintrags: | https://elib.dlr.de/64892/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag, Paper) | ||||||||||||||||||||
Titel: | Time-linearized and Time-accurate 3D RANS Methods for Aeroelastic Analysis in Turbomachinery | ||||||||||||||||||||
Autoren: |
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Datum: | Juni 2010 | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
DOI: | 10.1115/gt2010-22940 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Aeroelasticity, time-linearized RANS, unsteady RANS, CFD | ||||||||||||||||||||
Veranstaltungstitel: | ASME TurboExpo 2010 | ||||||||||||||||||||
Veranstaltungsort: | Glasgow, UK | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsbeginn: | 14 Juni 2010 | ||||||||||||||||||||
Veranstaltungsende: | 18 Juni 2010 | ||||||||||||||||||||
Veranstalter : | ASME | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Antriebe (alt) | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L ER - Antriebsforschung | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Triebwerk und Validierungsmethoden (alt) | ||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Antriebstechnik > Numerische Methoden > Numerische Simulation Institut für Antriebstechnik > Numerische Methoden Institut für Simulations- und Softwaretechnik Institut für Simulations- und Softwaretechnik > Verteilte Systeme und Komponentensoftware | ||||||||||||||||||||
Hinterlegt von: | Kersken, Dr.rer.nat. Hans-Peter | ||||||||||||||||||||
Hinterlegt am: | 04 Aug 2010 08:17 | ||||||||||||||||||||
Letzte Änderung: | 11 Nov 2024 10:21 |
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