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Subgrid modeling fo...
Subgrid modeling for convection-diffusion-reaction in one space dimension using a Haar Multiresolution analysis
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- Hoffman, Johan (författare)
- Mathematics, Chalmers,Chalmers tekniska högskola,Chalmers University of Technology,Courant Institute of Mathematical Sciences
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- Johnson, Claes (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för matematiska vetenskaper,Department of Mathematical Sciences,Department of Computational Mathematics, Chalmers University
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- Bertoluzza, S. (författare)
- Istituto Di Matematica Applicata E Tecnologie Informatiche, Pavia
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(creator_code:org_t)
- Elsevier BV, 2005
- 2005
- Engelska.
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Ingår i: Computer Methods in Applied Mechanics and Engineering. - : Elsevier BV. - 0045-7825 .- 1879-2138. ; 194:1, s. 19-44
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Nyckelord
- convection-diffusion-reaction
- dynamic subgrid modeling
- Haar Multiresolution analysis
- modeling errors
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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