Details

Autor(en) / Beteiligte

• Andersson, Ulf
• Engquist, Björn
• Ledfelt, Gunnar
• Runborg, Olof

Titel

A Contribution to Wavelet-Based Subgrid Modeling

Ist Teil von

• Applied and computational harmonic analysis, 1999-09, Vol.7 (2), p.151-164

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

1999

Link zum Volltext

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• 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.