A non‐iterative domain decomposition method for the interaction between a fluid and a thick structure
A non‐iterative domain decomposition method for the interaction between a fluid and a thick structure
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流体与厚结构相互作用的非迭代域分解方法
DOI:
10.1002/num.22771
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发表时间:
2021
影响因子:
3.9
通讯作者:
Bukač, M
中科院分区:
文献类型:
--
作者:
Seboldt, A;Bukač, M
This work focuses on the development and analysis of a partitioned numerical method for moving domain, fluid–structure interaction problems. We model the fluid using incompressible Navier–Stokes equations, and the structure using linear elasticity equations. We assume that the structure is thick, that is, described in the same dimension as the fluid. We propose a non‐iterative, domain decomposition method where the fluid and the structure subproblems are solved separately. The method is based on generalized Robin boundary conditions, which are used in both fluid and structure subproblems. Using energy estimates, we show that the proposed method applied to a moving domain problem is unconditionally stable. We also analyze the convergence of the method and show convergence in time and optimal convergence in space. Numerical examples are used to demonstrate the performance of the method. In particular, we explore the relation between the combination parameter used in the derivation of the generalized Robin boundary conditions and the accuracy of the scheme. We also compare the performance of the method to a monolithic solver.
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DOI:
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发表时间:
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期刊:
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