Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10349427 | Computer Methods in Applied Mechanics and Engineering | 2005 | 26 Pages |
Abstract
In this paper we propose and study a subgrid model for linear convection-diffusion-reaction equations with fractal rough coefficients. The subgrid model is based on scale extrapolation of a modeling residual from coarser scales using a computed solution on a finest scale as reference. We show in experiments that a solution with subgrid model on a scale h in most cases corresponds to a solution without subgrid model on a scale less than h/4. We also present error estimates for the modeling error in terms of modeling residuals.
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Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Johan Hoffman, Claes Johnson, Silvia Bertoluzza,