MINDS Seminar Series | Duksoon Oh (Chungnam National University) - Multigrid Methods for Vector Field Problems

period : 2021-05-04 ~ 2021-05-04
time : 16:00:00 ~ 17:00:00
개최 장소 : Online streaming (Zoom)
Topic : Multigrid Methods for Vector Field Problems
Date 2021-05-04 ~ 2021-05-04 Time 16:00:00 ~ 17:00:00
Speaker Duksoon Oh Affiliation Chungnam National University
Place Online streaming (Zoom) Streaming link ID : 688 896 1076 / PW : letmein
Topic Multigrid Methods for Vector Field Problems
Contents We design and analyze V‐cycle multigrid methods for problems posed in H(div) and H(curl). Due to the fact that traditional smoothers do not work well for the vector field problems, a special approach for smoothers in the multigrid methods is essential. We introduce a new smoothing technique which involves non-overlapping domain decomposition preconditioners based on substructuring. We prove uniform convergence of the V‐cycle methods on bounded convex hexahedral domains. Numerical experiments that support the theory are also presented.
MinDS MinDS · 2021-02-21 02:24 · Views 863