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Strong Coupling Methods. - (Informatikbericht Nr. 2002-06)

Autor/en :

Matthies, Hermann G.
Steindorf, Jan

Institut / Verlag :

Institut für Wissenschaftliches Rechnen, 2002

Fakultät :

01 - Mathematik und Informatik

Freigeschaltet am :

31.01.2012

Dokumente :

Document_00001379

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Umfang :

33 S.

Sprache :

englisch

Kurzfassung :

We consider the procedure of computing the response of a coupled problem with a partitioned approach. Often we have existing procedures or even software to solve each sub-problem separately, and want to couple both. This setting seems to allow only the so-called weak coupling which is not sufficient for some problems. The so-called strong coupling --- a totally implicit formulation --- requires iteration in each time step. With the partitioned approach, one simple computational procedure is similar to a block-Gauss-Seidel iteration. We show why this approach may experience difficulties, and how they may be circumvented with block-Newton methods, still in the partitioned framework, by only using the solvers for the two sub-problems. We supply some examples from fluid-structure coupling.

Schlagwörter :

partitioned methods; strong coupling; block-Newton methods; fluid-structure-interaction

Sachgebiet :

510 Mathematik

Typ :

Publikationen der TU Braunschweig

Format :

Text/Dokument

URN:NBN :

urn:nbn:de:gbv:084-12013115211

Zitierfähige URL :

http://www.digibib.tu-bs.de/?docid=00001379