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A time-accurate finite element algorithm for incompressible flow problems
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DOI：10.1108/09615530310459324.png)
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A finite element solution procedure is presented for the simulation of transient incompressible fluid flows using triangular meshes. The algorithm is based on the artificial compressibility technique in connection with a dual time-stepping approach. A second-order discretization is employed to achieve the required accuracy in real-time while an explicit multistage Runge-Kutta scheme is used to march in the pseudo-time domain. A standard Galerkin finite element method, stabilized by using an artificial dissipation technique, is used for the spatial discretization. The performance of the proposed algorithm is demonstrated by solving a set of internal and external problems including flows with purely transient and periodic behavior.
Keyword:
incompressible flow
finite elements
mesh
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