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Engels-Putzka, Anna und Backhaus, Jan und Frey, Christian (2014) On the usage of finite differences for the development of discrete linearised and adjoint CFD 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, Seiten 5058-5070. 6th. European Conference on Computational Fluid Dynamics - ECFD VI, 2014-07-20 - 2014-07-25, Barcelona, Spanien.
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Offizielle URL: http://www.wccm-eccm-ecfd2014.org/admin/files/filePaper/p1796.pdf
Kurzfassung
In this paper we discuss the usage of finite differences for the computation of the flux Jacobian in the framework of a discrete adjoint or time-linearised flow solver, in particular the associated choice of an appropriate step size. For comparison, we apply algorithmic differentiation to obtain an exact flux Jacobian. It turns out that the results depend strongly on the choice of the slope limiter. A careful choice of this function is crucial for computations with exact flux linearisations as well as for finite difference approximations.
| elib-URL des Eintrags: | https://elib.dlr.de/90138/ | ||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
| Titel: | On the usage of finite differences for the development of discrete linearised and adjoint CFD 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 | ||||||||||||||||
| Seitenbereich: | Seiten 5058-5070 | ||||||||||||||||
| Herausgeber: |
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| Status: | veröffentlicht | ||||||||||||||||
| Stichwörter: | Time-linearised Methods, Adjoint Methods, Finite Differences, Algorithmic Differentiation | ||||||||||||||||
| Veranstaltungstitel: | 6th. European Conference on Computational Fluid Dynamics - ECFD VI | ||||||||||||||||
| Veranstaltungsort: | Barcelona, Spanien | ||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
| Veranstaltungsbeginn: | 20 Juli 2014 | ||||||||||||||||
| Veranstaltungsende: | 25 Juli 2014 | ||||||||||||||||
| Veranstalter : | Spanish Association for Numerical Methods in Engineering (SEMNI) | ||||||||||||||||
| 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: | Engels-Putzka, Anna | ||||||||||||||||
| Hinterlegt am: | 11 Aug 2014 07:13 | ||||||||||||||||
| Letzte Änderung: | 05 Nov 2024 07:40 |
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