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• W4225527250 endingPage "103761" @default.
• W4225527250 startingPage "103761" @default.
• W4225527250 abstract "A monolithic numerical scheme for fluid–structure interaction with special interest in thin-walled piezoelectric energy harvesters driven by fluid is proposed. Employing a beam/shell model for the thin-walled structure in this particular application creates a FSI problem in which an (n−1)-dimensional structure is embedded in an n-dimensional fluid flow. This choice induces a strongly discontinuous pressure field along the moving fluid–solid interface. We overcome this challenge within a continuous finite element framework by a splitting-fluid-domain approach. The governing equations of the multiphysics problem are solved in a simultaneous fashion in order to reliably capture the main dynamic characteristics of the strongly-coupled system that involves a large deformation piezoelectric composite structure, an integrated electric circuit and an incompressible viscous fluid. The monolithic solution scheme is based on the weighted residuals method, with the boundary-fitted finite element method used for the discretization in space, and the generalized-α method for discretization in time. The proposed framework is evaluated against reference data of two popular FSI benchmark problems. Two additional numerical examples of flow-driven thin-walled piezoelectric energy harvesters demonstrate the feasibility of the framework to predict controlled cyclic response and limit-cycle oscillations and thus the power output in typical operational states of this class of energy harvesting devices." @default.
• W4225527250 created "2022-05-05" @default.
• W4225527250 creator A5004338414 @default.
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• W4225527250 date "2022-09-01" @default.
• W4225527250 modified "2023-10-06" @default.
• W4225527250 title "Modeling and simulation of thin-walled piezoelectric energy harvesters immersed in flow using monolithic fluid–structure interaction" @default.
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• W4225527250 doi "https://doi.org/10.1016/j.finel.2022.103761" @default.
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