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- W1995725229 abstract "A full discrete two-level postprocessing Fourier Galerkin scheme for the unsteady Navier–Stokes equations with a periodic boundary condition is proposed in this paper. By defining a new projection, the interaction between the large and small eddies is reflected by the associated space splitting to some extent. Therefore, a weakly coupled system of the large and small eddies is obtained. Stability and error estimates for the weakly coupled two-level scheme are established in the paper. The proposed scheme is an effective algorithm because nonlinearity is treated only in the coarse-level subspace by solving the coarse-level standard Galerkin equation, and the matrix of the linear algebraic equations arising in each fine-level time stepping is a sparse matrix, especially for large scale computations. As a result, the new scheme saves a lot of CPU time and memory in comparison with the standard Fourier Galerkin method for deriving an approximation of prescribed accuracy." @default.
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- W1995725229 date "2009-01-01" @default.
- W1995725229 modified "2023-09-25" @default.
- W1995725229 title "Postprocessing Fourier Galerkin Method for the Navier–Stokes Equations" @default.
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- W1995725229 doi "https://doi.org/10.1137/060675952" @default.
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