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Einrichtungen >> Technische Fakultät (TF) >> Department Maschinenbau (MB) >> Lehrstuhl für Technische Mechanik (LTM, Prof. Steinmann) >>
Numerische Behandlung der Fluiddynamik mit der Randelementmethode

The focus of this joint research project is the development of the Boundary Element Method for computational simulations of transport phenomena, especially incompressible fluid flow and convective heat and mass transfer.

Development of basic numerical algorithm of Boundary domain integral method
The basic algorithm of the Boundary domain integral method, based on extreme approach to Sub-domain technique, was developed during the first period of the project. Additional research was carried out and resulted in following achievements: -implementation of higher order boundary elements and internal cells,
-introduction of non-Newtonian constitutive laws into the formulation,
-development of computational algorithm for viscoelastic fluid flows,
-development of two-equation turbulence models, especially k-e model.

Development of BDIM for computation of conjugate transport problems
Boundary domain integral method is closely connected with other BEM algorithms, therefore a combination of different BEM algorithms in one computational tool is very advantageous and suitable for computation of conjugate problems. Among them, coupled problems of heat conduction and mass diffusion in solids together with heat and mass convection in fluid presented the goal of our joint research work. A combination of Dual reciprocity method for computation of time dependent heat and mass diffusion in solid, with BDIM for convective heat and mass transfer in fluid, proved as a promising new computational tool for conjugate problems. It combines advantages of BEM methods, boundary only discretization of solid domains, with highly accurate computations of convective transport phenomena in fluid domains by the BDIM using also domain discretization.

Projektleitung:
Prof. Dr.-Ing. habil. Günther Kuhn, Prof. dr. Leopold Skerget, Prof. dr. Matjasz Hribersek

Stichwörter:
computational fluid dynamics; boundary element method

Laufzeit: 1.1.1999 - 31.12.2004

Förderer:
Alexander von Humboldt-Stiftung / Institutskooperationsprogramm

Mitwirkende Institutionen:
University of Maribor, Faculty of Mechanical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia

Kontakt:
Kuhn, Günther
Telefon 09131-8528502, Fax 09131-8528503, E-Mail: guenther.kuhn@fau.de
Publikationen
Skerget, L. ; Hribersek, M. ; Kuhn, Günther: Computational fluid dynamics by boundary-domain integral method. In: International Journal for Numerical Methods in Engineering, 46, (1999), S. 1291 - 1311
Hribersek, M. ; Kuhn, Günther: Conjugate heat transfer by boundary-domain integral method. In: Engineering Analysis with Boundary Elements, 24, (2000), S. 297 - 305
Blobner, J. ; Hribersek, M. ; Kuhn, Günther: Dual reciprocity BEM-BDIM technique for conjugate heat transfer computations. In: Computer Methods in Applied Mechanical Engineering, 190, (2000), S. 1105 - 1116
Hribersek, M. ; Kuhn, Günther ; Blobner, J.: Conjugate thermosolutal natural convection. In: IABEM (Veranst.) : Extended abstracts (IABEM-International Association for Boundary Element Methods Symposium, Brescia, Italy, June 4 - 7, 2000). Bologna : Societá Editrice Esculapio, 2000, S. 129 - 132.
Blobner, J. ; Kuhn, Günther ; Bialecki, R. A. ; Hribersek, M.: A Dual Reciprocity Boundary Element formulation for transient non-linear conduction-radiation problems. In: Burczynski, T. (Hrsg.) : Proceedings of the IUTAM/IABEM Symposium on Advanced Mathematical and Computational Mechanics. Aspects of the Boundary Element Method (IUTAM/IABEM Symposium on Advanced Mathematical and Computational Mechanics. Aspects of the Boundary Element Method, Cracow, 1999). Dordrecht : Kluwer Academic Publishers, 2001, S. 1 - 11.
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