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Dynamic subgrid modeling for scalar convection-diffusion-reaction equations with fractal coefficients
KTH, Skolan för datavetenskap och kommunikation (CSC), Numerisk analys, NA.ORCID-id: 0000-0003-4256-0463
2001 (engelsk)Inngår i: Lecture notes in computational science and engineeringArtikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this paper we propose and study a subgrid model for linear convection-diffusion-reaction problems with fractal rough coefficients. The subgrid model is based on extrapolation model of a modeling residual from coarser scales using a computed solution without subgrid model on a finest scale as reference. We present a priori and a posteriori error estimates, and we show in experiments that a solution with subgrid model on a scale h corresponds to a solution without subgrid model on a scale less than h/4

sted, utgiver, år, opplag, sider
2001.
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URN: urn:nbn:se:kth:diva-58718OAI: oai:DiVA.org:kth-58718DiVA, id: diva2:473838
Merknad
NR 20140805Tilgjengelig fra: 2012-01-07 Laget: 2012-01-07 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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