- AutorIn
- Hannes Müller
- Titel
- Ein Konzept zur numerischen Berechnung inkompressibler Strömungen auf Grundlage einer diskontinuierlichen Galerkin-Methode in Verbindung mit nichtüberlappender Gebietszerlegung
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:swb:14-992350020281-96843
- Datum der Einreichung
- 11.05.1999
- Datum der Verteidigung
- 27.09.1999
- Abstract (EN)
- A new combination of techniques for the numerical computation of incompressible flow is presented. The temporal discretization bases on the discontinuous Galerkin-formulation. Both constant (DG(0)) and linear approximation (DG(1)) in time is discussed. In case of DG(1) an iterative method reduces the problem to a sequence of problems each with the dimension of the DG(0) approach. For the semi-discrete problems a Galerkin/least-squares method is applied. Furthermore a non-overlapping domain decomposition method can be used for a parallelized computation. The main advantage of this approach is the low amount of information which must be exchanged between the subdomains. Due to the slight bandwidth a workstation-cluster is a suitable platform. Otherwise this method is efficient only for a small number of subdomains. The interface condition is of the Robin/Robin-type and for the Navier-Stokes equation a formulation introducing a further pressure interface condition is used. Additionally a suggestion for the implementation of the standard k-epsilon turbulence model with special wall function is done in this context. All the features mentioned above are implemented in a code called ParallelNS. Using this code the verification of this approach was done on a large number of examples ranging from simple advection-diffusion problems to turbulent convection in a closed cavity.
- Freie Schlagwörter (DE)
- CFD, Finite-Elemente-Methode, Gebietszerlegung (nichtüberlappend), Strömungsmechanik, Turbulenzmodellierung, inkompressible Strömung, numerische Simulation
- Freie Schlagwörter (EN)
- CFD, Galerkin/least-squares FEM, discontinuous Galerkin-formulation, incompressible flow, non-overlapping domain decomposition, space-time formulation
- Klassifikation (DDC)
- 520
- Klassifikation (RVK)
- UF 4000
- Normschlagwörter (GND)
- Diskontinuierliche Galerkin-Methode, Inkompressible Strömung
- GutachterIn
- Prof. Dr.-Ing. R. Grundmann
- Dr.-Ing. W. Kordulla
- Prof. Dr. rer. nat. habil. G. Lube
- BetreuerIn Hochschule / Universität
- Prof. Dr.-Ing. R. Grundmann
- Verlag
- Technische Universität Dresden, Dresden
- Den akademischen Grad verleihende / prüfende Institution
- Technische Universität Dresden, Dresden
- URN Qucosa
- urn:nbn:de:swb:14-992350020281-96843
- Veröffentlichungsdatum Qucosa
- 12.09.1999
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Deutsch
- Lizenz / Rechtehinweis