Drescher, Lukas ; Heumann, Holger ; Schmidt, Kersten (2017)
A High Order Galerkin Method for Integrals over Contour Lines with an Application to Plasma Physics.
In: SIAM Numer. Math., 55 (6)
doi: 10.1137/16M1102227
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We introduce a novel method to compute approximations of integrals over implicitly defined hypersurfaces. The new method is based on a weak formulation in L2(0,1) that uses the coarea formula to circumvent an explicit integration over the hypersurfaces. As such it is possible to use standard quadrature rules in the spirit of hp/spectral finite element methods, and the expensive computation of explicit hypersurface parametrizations is avoided. We derive error estimates showing that high order convergence can be achieved provided the integrand and the hypersurface defining function are sufficiently smooth. The theoretical results are supplemented by numerical experiments including an application for plasma modeling in nuclear fusion.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Drescher, Lukas ; Heumann, Holger ; Schmidt, Kersten |
| Art des Eintrags: | Bibliographie |
| Titel: | A High Order Galerkin Method for Integrals over Contour Lines with an Application to Plasma Physics |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | SIAM Numer. Math. |
| Jahrgang/Volume einer Zeitschrift: | 55 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1137/16M1102227 |
| URL / URN: | https://doi.org/10.1137/16M1102227 |
| Kurzbeschreibung (Abstract): | We introduce a novel method to compute approximations of integrals over implicitly defined hypersurfaces. The new method is based on a weak formulation in L2(0,1) that uses the coarea formula to circumvent an explicit integration over the hypersurfaces. As such it is possible to use standard quadrature rules in the spirit of hp/spectral finite element methods, and the expensive computation of explicit hypersurface parametrizations is avoided. We derive error estimates showing that high order convergence can be achieved provided the integrand and the hypersurface defining function are sufficiently smooth. The theoretical results are supplemented by numerical experiments including an application for plasma modeling in nuclear fusion. |
| Fachbereich(e)/-gebiet(e): | 04 Fachbereich Mathematik 04 Fachbereich Mathematik > Numerik und wissenschaftliches Rechnen |
| Hinterlegungsdatum: | 19 Nov 2018 21:00 |
| Letzte Änderung: | 19 Nov 2018 21:00 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum