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- W4293506013 abstract "We present a strongly-coupled immersed-boundary method for flow-structure interaction problems involving thin deforming bodies. The method is stable for arbitrary choices of solid-to-fluid mass ratios and for large body motions. As with many strongly-coupled immersed-boundary methods, our method requires the solution of a nonlinear algebraic system at each time step. The system is solved through iteration, where the iterates are obtained by linearizing the system and performing a block LU factorization. This restricts all iterations to small-dimensional subsystems that scale with the number of discretization points on the immersed surface, rather than on the entire flow domain. Moreover, the iteration procedure we propose does not involve heuristic regularization parameters, and has converged in a small number of iterations for all problems we have considered. We derive our method for general deforming surfaces, and verify the method with two-dimensional test problems of geometrically nonlinear beams undergoing large amplitude flapping behavior." @default.
- W4293506013 created "2022-08-30" @default.
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- W4293506013 date "2016-10-04" @default.
- W4293506013 modified "2023-09-27" @default.
- W4293506013 title "A strongly-coupled immersed-boundary formulation for thin deforming surfaces, with application to elastic beams" @default.
- W4293506013 doi "https://doi.org/10.48550/arxiv.1610.01115" @default.
- W4293506013 hasPublicationYear "2016" @default.
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