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SUMMARY:An overview of non-matching coupling algorithm for High Performanc
 e Finite Element Applications
DTSTART:20251111T130000Z
DTEND:20251111T140000Z
DTSTAMP:20260317T123800Z
UID:indico-event-333@events.dm.unipi.it
DESCRIPTION:Speakers: Luca Heltai (Università di Pisa)\n\nThis seminar pr
 esents an overview of non-matching coupling algorithms for high-performanc
 e finite element applications\, with emphasis on implementation and precon
 ditioning aspects.We address ficitious domain\, immersed boundary\, and mi
 xed-dimensional problems on non-matching grids\, as arise in coupled PDE s
 ystems defined on heterogeneous domains.We derive different formulations a
 nd show how most of them can be traced back to variations or stabilization
 s of the Lagrange multiplier and distributed Lagrange multiplier framework
 s.We discuss various implementation aspects of the problem\, including exa
 ct and inexact integration across non-matching grids\, matrix based and ma
 trix-free transfer operators\, particle-based transfer operators\, and dis
 cuss briefly some augmented Lagrangian-based preconditioners\, designed to
  yield optimal and scalable convergence properties when used in conjunctio
 n with iterative Krylov solvers.Finally\, we discuss what is the current s
 tatus of the implementation for these solvers within the deal.II finite el
 ement library.StreamingThe seminar will also be broadcast online at the li
 nk: https://meetings.dm.unipi.it/b/luc-kwc-keb-p9k\n\nhttps://events.dm.un
 ipi.it/event/333/
LOCATION:Aula Seminari (Dipartimento di Matematica)
URL:https://events.dm.unipi.it/event/333/
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