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Iterative solution of global electromagnetic wavefields with finite elements
KTH, Superseded Departments, Alfvén Laboratory.
2001 (English)In: Computer Physics Communications, ISSN 0010-4655, E-ISSN 1879-2944, Vol. 135, no 1, 74-81 p.Article in journal (Refereed) Published
Abstract [en]

The time-independent Maxwell equations are solved iteratively in 2D geometry fur 3D global waves in plasma physics. Krylov space methods, such as the generalized- or the quasi-minimal residuals (GMRES or QMR), are applied together with an incomplete factorization (ILU) preconditioning to a formulation using nodal elements for the electromagnetic scalar and vector potentials. The plasma response is represented as a complex, frequency dependent, dielectric tensor operator and can be used for a variety of applications involving low frequency waves in a tokamak. The iterative approach does not only result in considerable memory savings, but it is also more efficient than a direct solution and paves the way for the parallelization of global wave and stability codes.

Place, publisher, year, edition, pages
2001. Vol. 135, no 1, 74-81 p.
Keyword [en]
Maxwell, plasmal iterative, GMRES, TFQMR, hot tokamak plasmas, mode conversion, stability code, mhd stability, waves, systems, qmr
Identifiers
URN: urn:nbn:se:kth:diva-20485ISI: 000167744400005OAI: oai:DiVA.org:kth-20485DiVA: diva2:339180
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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