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Filtering techniques for complex geometry fluid flows

✍ Scribed by Mullen, Julie S. ;Fischer, Paul F.

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
208 KB
Volume
15
Category
Article
ISSN
1069-8299

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✦ Synopsis

We develop a class of ®lters based upon the numerical solution of high-order elliptic problems in d which allow for independent determination of order and cut-o wave number and which default to classical Fourier-based ®lters in homogeneous domains. However, because they are based on the solution of a PDE, the present ®lters are not restricted to applications in tensor-product based geometries as is generally the case for Fourier-based ®lters. The discrete representation of the ®ltered output is constructed from a Krylov space generated in solving a well-conditioned system arising from a low-order PDE.

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