A 3D implicit structured multi-block grid finite volume method for computational structural dynamics
نویسندگان
چکیده
This work aims to develop a FVM-based structural solver that can seamlessly be integrated with Computational Fluid Dynamics (CFD) solvers for fluid-structure interaction (FSI) problems. For flexibility in gridding and efficient computation, hexahedral multi-block grids are adopted which locally structured, but globally unstructured. Besides, ghost cells introduced solve the partial derivatives displacements at boundaries of computational domain. Time-accurate solutions obtained by employing matrix-free, dual time stepping approach, implicit residual value smoothing method is used increase convergence rate. Stresses evaluated using Green's theorem based on gradients displacement cells. The proposed applied static dynamic response 3D cantilevers. Results found agree well analytical solutions, amplitude error less than 1.5%. resonance beating phenomena were clearly observed compared Finite Element approaches accuracy efficiency. Finally, cantilever beam NACA0012 airfoil analyzed preliminarily.
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ژورنال
عنوان ژورنال: Aerospace Science and Technology
سال: 2021
ISSN: ['1626-3219', '1270-9638']
DOI: https://doi.org/10.1016/j.ast.2021.106980