Details

Autor(en) / Beteiligte

• Floch, Oliver
• Sommer, Alexander
• Klis, Daniel
• Farle, Ortwin
• Dyczij-Edlinger, Romanus

Titel

An Adaptive Deflation Domain-Decomposition Preconditioner for Fast Frequency Sweeps

Ist Teil von

• IEEE transactions on magnetics, 2016-03, Vol.52 (3), p.1-4

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2016

Quelle

IEEE

Beschreibungen/Notizen

• An adaptive multi-point model-order reduction is a well-established methodology for computing fast frequency sweeps of finite-element (FE) models. For structures that are electrically large, however, generating the reduced-order system is computationally expensive, because both the size of the FE model and the number of expansion points become large. Thus, a great number of independent large-scale systems of linear equations must be solved by iterative methods. To alleviate this problem, this paper proposes to employ the reduced-order system already available at a given adaptive step for constructing an efficient two-level preconditioner. Two numerical examples demonstrate the benefits of the suggested approach.