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A contribution to wavelet-based subgrid modeling
KTH, School of Computer Science and Communication (CSC), Numerical Analysis, NA.
1999 (English)In: Applied and Computational Harmonic Analysis, ISSN 1063-5203, E-ISSN 1096-603X, Vol. 7, no 2, 151-164 p.Article in journal (Refereed) Published
Abstract [en]

A systematic technique for the derivation of subgrid scale models in the numerical solution of partial differential equations is described. The technique is based on Haar wavelet projections of the discrete operator followed by a sparse approximation. As numerical testing suggests, the resulting numerical method will accurately represent subgrid scale phenomena on a coarse grid. Applications to numerical homogenization and wave propagation in materials with subgrid inhomogeneities are presented.

Place, publisher, year, edition, pages
1999. Vol. 7, no 2, 151-164 p.
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-90352OAI: diva2:505024
NR 20140805Available from: 2012-02-22 Created: 2012-02-22Bibliographically approved

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Engquist, Björn
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Numerical Analysis, NA
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