期刊
JOURNAL OF ENGINEERING MECHANICS
卷 147, 期 10, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)EM.1943-7889.0001968
关键词
Non-Newtonian fluid-structure interaction; Cell-based smoothed finite element method (CS-FEM); Partitioned strong coupling; Carreau-Yasuda fluid; Finite deformation
资金
- Natural Science Foundation of Shanghai [19ZR1437200]
The work introduces a cell-based smoothed finite-element method (CS-FEM) for simulating strongly coupled non-Newtonian fluid-structure interactions. The method softens all gradient-related terms and achieves strong coupling between the two physical media via a block Gauss-Seidel iterative procedure.
This work presents a cell-based smoothed finite-element method (CS-FEM) for simulating strongly coupled non-Newtonian fluid-structure interactions. The governing equations of a Carreau-Yasuda fluid and an elastic solid are discretized by the CS-FEM, which softens all gradient-related terms. The stress equilibrium along the interface is also derived from the CS-FEM notion. After discussing a two-level mesh-updating strategy, the strong coupling between the two physical media is realized via the block Gauss-Seidel iterative procedure. Numerical examples are presented to demonstrate the performance of the proposed method.
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