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- W1544715904 abstract "The authors present a new method for fast transport synthetic acceleration (TSA) of source iterations for S{sub N} problems, using a pure absorber problem stretched to have a mean free path comparable to a diffusion length. The resulting scheme is at first glance unstable, with a large negative eigenvalue at high spatial frequencies, but it can be made effective using (i) a low-pass filter, (ii) a Krylov method, or both. The stretched error correction and the filter are implemented with the same spatial discretization as the underlying source iteration, the Explicit Slope (ES) scheme. In this summary (Part I), they describe the acceleration method, summarize results of Fourier analysis, and give test results in homogeneous planar geometry. In the second summary, they describe significant additional features in heterogeneous problems." @default.
- W1544715904 created "2016-06-24" @default.
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- W1544715904 date "2003-11-16" @default.
- W1544715904 modified "2023-09-26" @default.
- W1544715904 title "Stretched and Filtered Transport Synthetic Acceleration of Sn Problems: Part 1: Homogeneous Media" @default.
- W1544715904 hasPublicationYear "2003" @default.
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