FINITE ELEMENT MODELING EXPERIMENTS OF UNSTEADY FLOW AROUND A CIRCULAR CYLINDER

FINITE ELEMENT MODELING EXPERIMENTS OF UNSTEADY FLOW AROUND A CIRCULAR CYLINDER

Lobão, D.C.

Full Article:

The finite element method (FEM) has become one of the most important and useful engineering tools for engineers and scientists in the last three decades. Finite element method is considered very powerful and efficient tool in solving partial differential equations. Seeking for exact solution of some engineering applications, such as fluid flow problems, is still a challenging task to overcome. Based on this, finite element method can be used to model such problems and it is possible to obtain solution near to the exact one. In the present study, FEM is employed to discretize the governing equations for a viscous incompressible fluid flow around a circular cylinder inside a 2D channel. The fluid flow is described by the Navier– Stokes equations. There are many methods to tackle these equations. However, minding computational speed the choice is for a simple method called Chorin’s projection method for discretizing the Navier-Stokes equations. Results are presented for two different meshes and is shown that the elements density have some significant influence in the results. Also, there is an apparent effect on Cd and Cl calculation on the cylinder.

The finite element method (FEM) has become one of the most important and useful engineering tools for engineers and scientists in the last three decades. Finite element method is considered very powerful and efficient tool in solving partial differential equations. Seeking for exact solution of some engineering applications, such as fluid flow problems, is still a challenging task to overcome. Based on this, finite element method can be used to model such problems and it is possible to obtain solution near to the exact one. In the present study, FEM is employed to discretize the governing equations for a viscous incompressible fluid flow around a circular cylinder inside a 2D channel. The fluid flow is described by the Navier– Stokes equations. There are many methods to tackle these equations. However, minding computational speed the choice is for a simple method called Chorin’s projection method for discretizing the Navier-Stokes equations. Results are presented for two different meshes and is shown that the elements density have some significant influence in the results. Also, there is an apparent effect on Cd and Cl calculation on the cylinder.

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DOI: 10.5151/meceng-wccm2012-19522

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Como citar:

Lobão, D.C.; "FINITE ELEMENT MODELING EXPERIMENTS OF UNSTEADY FLOW AROUND A CIRCULAR CYLINDER", p-3691-3702. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-19522