Fiedler, Jens und di Mare, Francesca (2014) Low-Mach preconditioned boundary conditions for compressible solvers. In: Joint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014. 6th. European Conference on Computational Fluid Dynamics, 2014-07-20 - 2014-07-25, Barcelona, Spanien.
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Kurzfassung
Approaching the incompressibility limit in CFD applications where compressible, density based solution methods are employed, is accompanied very often not only by slow convergence of the residuals but also by a strong degradation of the solution quality. This issue is particularly severe in turbo-machinery applications, where large variations of flow regimes occur. Low-Mach preconditioning methods can be applied to the Euler- and Navier-Stokes equations to alleviate such difficulties. As noted by several authors, these techniques can cause stability problems especially in proximity of the domain’s boundaries. In particular, it has been demonstrated that an appropriate scaling treatment is also required for characteristic-based boundary conditions. In the current work we present the theoretical development and application of preconditioned impermeable boundaries in combination with preconditioned far-field conditions in the in-house CFD code TRACE.
elib-URL des Eintrags: | https://elib.dlr.de/90285/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Titel: | Low-Mach preconditioned boundary conditions for compressible solvers | ||||||||||||
Autoren: |
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Datum: | Juli 2014 | ||||||||||||
Erschienen in: | Joint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014 | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Low-Mach precondition, compressible flows, preconditioned boundary conditions | ||||||||||||
Veranstaltungstitel: | 6th. European Conference on Computational Fluid Dynamics | ||||||||||||
Veranstaltungsort: | Barcelona, Spanien | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 20 Juli 2014 | ||||||||||||
Veranstaltungsende: | 25 Juli 2014 | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Antriebssysteme | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L ER - Engine Research | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Triebwerk und Validierungsmethoden (alt) | ||||||||||||
Standort: | Köln-Porz | ||||||||||||
Institute & Einrichtungen: | Institut für Antriebstechnik > Numerische Methoden | ||||||||||||
Hinterlegt von: | Fiedler, Jens | ||||||||||||
Hinterlegt am: | 18 Aug 2014 10:42 | ||||||||||||
Letzte Änderung: | 05 Nov 2024 07:40 |
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