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COBEM 2023
27th International Congress of Mechanical Engineering
Fluid-structure interaction with Finite Element - Immersed Boundary Apporach with Industrial Application
Submission Author:
Freddy Portillo Morales , SP
Co-Authors:
Freddy Portillo Morales, Aristeu Silveira Neto, Aldemir Ap Cavalini Jr, Leandro Jose Lemes Stival
Presenter: Freddy Portillo Morales
doi://10.26678/ABCM.COBEM2023.COB2023-0644
Abstract
Fluid-structure interaction (FSI) is a complex phenomenon that occurs when a fluid flow interact with a flexible structure. There are so many ways to simulate numerically that kind of physical problems. This article discusses the numerical implementation of simulation routines for FSI analysis using a coupling of Finite Element Method (FEM), Immersed Boundary Method (IBM) and Finite Volume Method (FVM). This approach allows to solve FSI problems with a low computational cost when compared with ALE (Arbitrary Lagrangian Eulerian) methods, because it can be solved using structured meshes for the fluid solver. The computational implementations were made into MFSim, code developed by the Fluid Mechanics Laboratory (MFLab) of University of Uberlandia in partnership with Petrobras. The FEM is a numerical method that discretizes the domain into small elements and solve the governing equations for each one of these elements considering their respective connections where the solution is approximated by polynomial functions, allowing to solve different kind of physical phenomena as solid mechanics, fluid mechanics, electromagnetism, electrical circuits, etc. The IBM is a technique that enables the representation of the solid geometry within the fluid domain by imposing a force on the fluid through a Lagrangian force term. Finally, the FVM is a numerical method that discretize the domain into small control volumes where the conservation equations are solved. The article presents results of FSI simulations of a flexible vertical flap with a perpendicular air flow. The results demonstrate the effectiveness of the coupling approach, as well as the importance of accurate modeling of FSI problems. The simulations shows the deformation of the structure due to the interaction of the fluid in time and how the presence of the structure affects the flow. This paper demonstrates the application of FSI analysis in an industrial context, specifically focusing on a pipeline system within a Fluid Catalytic Cracking Unit used in the oil and gas industry. The analysis involves the use of butterfly valves positioned at different angles of opening. The fluid flow in the system is considered compressible, with properties that vary.
Keywords
fluid-structure interaction (FSI), Finite Element Method, Finite volume method, Immersed Boundary Method, MFSim
