• Medientyp: Sonstige Veröffentlichung; Bericht; E-Book
  • Titel: Finite element methods for surface diffusion
  • Beteiligte: Bänsch, Eberhard [Verfasser:in]; Morin, Pedro [Verfasser:in]; Nochetto, Ricardo H. [Verfasser:in]
  • Erschienen: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2003
  • Sprache: Englisch
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.805
  • Schlagwörter: 65M15 ; 35K55 ; 65M12 ; 65Z05 ; 65M60 ; Surface diffusion -- fourth-order parabolic problem -- finite elements -- a priori error estimates -- Schur complement -- smooth ing effect -- pinch-off ; article
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  • Beschreibung: Surface diffusion is a (4th order highly nonlinear) geometric driven motion of a surface with normal velocity proportional to the surface Laplacian of mean curvature. We present a novel variational formulation for the parametric case, develop a finite element method, and propose a Schur complement approach to solve the resulting linear systems. We also introduce a new graph formulation and state an optimal a priori error estimate. We conclude with several significant simulations, some with pinch-off in finite time.
  • Zugangsstatus: Freier Zugang