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A Comparison of Additive Schwarz Preconditioners for Parallel Adaptive Finite Elements

机译:平行自适应有限元添加剂施瓦茨预处理器的比较

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We consider a second order elliptic boundary value problem in the variational form: find u~* ∈ H_0~1(Ω), for a given polygonal (polyhedral) domain Ω is contained in R~d, d = 2,3 and a source term f ∈ L~2(Ω), such that ≡a(u~*,v){(∫_Ω ▽u~*(x) ? ▽v(x) dx) = ≡(f,v){( ∫_Ω f(x)v(x) dx), for all v ∈ H_0~1(Ω). (1) The Bank-Hoist parallel adaptive meshing paradigm is utilised to solve (1) in a combination of domain decomposition and adaptivity. It can be summarised as follows: Step Ⅰ-Mesh Partition: Starting with a coarse mesh Th, the domain is partitioned into non-overlapping subdomains: Ω = ∪_(i=1)~p Ω_i.
机译:我们考虑变分形式的二阶椭圆边值问题:找到U〜*∈H_0〜1(ω),对于给定的多边形(多面体)域ω包含在R〜D,D = 2,3和源中术语F≥L〜2(ω),使得≡A(u〜*,v){(∫ω▽u〜*(x)?▽v(x)dx)=≡(f,v){(∫ _ωf(x)v(x)dx),适用于所有v∈h_0〜1(ω)。 (1)银行葫芦并联自适应啮合范式用于解决(1)的结构域分解和适应性。它可以概括如下:步骤Ⅰ-网格分区:以粗地网格开始,域被划分为非重叠子域:ω=∪_(i = 1)〜pΩ_i。

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