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Preconditioning on stretched meshes
- Abstract:
-
High aspect ratio cells in a computational mesh compound the inherent stiffness in the Euler and Navier-Stokes equations which arises from a disparity in the propagative speeds of convective and acoustic modes. A mesh-aligned preconditioning strategy is examined which is intended to improve multigrid performance in two ways: a) enhancing propagation of disturbances by shaping wave front envelopes to match cell aspect ratios, b) clustering high frequency components of the spatial Fourier footp...
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- Publisher:
- Unspecified
- Publication date:
- 1995-06-01
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- UUID:
-
uuid:1255b17c-7b0d-40d8-bc69-989a7cee760a
- Local pid:
- oai:eprints.maths.ox.ac.uk:1341
- Deposit date:
- 2011-06-12
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- Copyright date:
- 1995
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