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Two-grid finite element formulations of the incompressible Navier-Stokes equations

✍ Scribed by UTNES, T.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
174 KB
Volume
13
Category
Article
ISSN
1069-8299

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✦ Synopsis

The paper compares two dierent two-grid ®nite element formulations applied to the Navier±Stokes equations, namely a multigrid and a mixed or composite formulation. In the latter case the pressure is interpolated on a coarser grid than the velocity, using mixed elements instead of mixed interpolation functions. In the multigrid formulation an equal-order interpolation is used on the same elements. A pressure Poisson formulation is used in both cases. Computational results are presented to compare the methods and comparisons are also made with other results.

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