Abstract
The paper proposes a new analysis method for fluid-structure problems, which has nodal consistency at the fluid-structure interface and its calculation efficiency and accuracy are high. The incompressible viscous fluid analysis method using the P1-P1 element based on SUPG/PSPG developed by Tezduyar et al. is used for fluid analysis, while the high-accuracy analysis method based on EFMM developed by the authors is adopted for structure analysis. As the common feature of these methods, it is possible to analyze a fluid or a structure rather accurately by using the first-order triangular or tetrahedral elements. In addition, variables are exchanged exactly at the common nodes on the fluid-structure boundary without deteriorating accuracy and calculation efficiency due to the interpolation of variables between nodes. The present method is applied to a fluid-structure interaction problem by simulating the deformation of a red blood cell.
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Nagaoka, S., Nakabayashi, Y., Yagawa, G. et al. Accurate fluid-structure interaction computations using elements without mid-side nodes. Comput Mech 48, 269–276 (2011). https://doi.org/10.1007/s00466-011-0620-7
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DOI: https://doi.org/10.1007/s00466-011-0620-7