Fictitious domain methods with distributed Lagrange multipliers

Yuri Kuznetsov

University of Houston

• DATE : jeudi 18/03/99
• HEURE et LIEU : 14h00 en salle RE002

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• RESUME/ABSTRACT : a number of fictitious domain methods have been introduced and investigated since the beginning of the 60th. Among them are the algorithms based on the perturbation techniques and finite element norm preserving extension theorems. In this talk a new fictitious domain method based on the distributed Lagrange multipliers will be presented. This method results in iterative algorithms for the solution of elliptic finite element systems which have the optimal order of the arithmetical complexity. Connection with the well known fictitious domain methods as well as applications to fluid flow simulation will be discussed.

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• REMARQUES :