| Publication type: |
 |
Conference proceedings |
|
| Subject: |
|
|
|
| Title: |
|
New Resolution Strategies for Multi-scale Reaction Waves: Optimal Time Operator Splitting and Space Adaptive Multiresolution |
|
| Author(s): |
|
Max Duarte ( ) 1, Marc Massot ( ) 1, Frédérique Laurent () 1, Stéphane Descombes () 2, Christian Tenaud () 3, Thierry Dumont () 4, 5, Violaine Louvet () 4, 5 |
|
| Laboratory: |
|
|
|
| Abstract: |
|
We tackle the numerical simulation of reaction-diffusion equations modeling multi-scale reaction waves. This type of problems induces peculiar difficulties and potentially large stiffness which stem from the broad spectrum of temporal scales in the nonlinear chemical source term as well as from the presence of large spatial gradients in the reaction fronts, spatially very localized. In this paper, we introduce a new resolution strategy based on time operator splitting and space adaptive multiresolution in the context of very localized and stiff reaction fronts. Based on recent theoretical studies of numerical analysis, such a strategy leads to a splitting time step which is not restricted neither by the fastest scales in the source term nor by restrictive diffusive step stability limits, but only by the physics of the phenomenon. We thus aim at solving accurately complete models including all time and space scales of the phenomenon, considering large simulation domains with conventional computing resources. The efficiency is evaluated through the numerical simulation of configurations which were so far out of reach of standard methods in the field of nonlinear chemical dynamics for 2D spiral waves and 3D scroll waves as an illustration. Future extensions of the proposed strategy are finally discussed. |
|
| Fulltext language: |
|
English |
|
| Production date: |
|
2011-01 |
|
|
| Journal: |
|
CLEI electronic journal |
|
| Book title: |
|
Special issue of best papers presented at CLEI 2010, Asunción, Paraguay |
|
| Audience: |
|
international |
|
| Publication date: |
|
2011-04 |
|
| Volume: |
|
14 |
|
| Issue: |
|
1 |
|
| Page, identifiant, ...: |
|
Paper 6, 14 pages |
|
| Scientifics editor: |
|
Luca Cernuzzi, Ramon Puigjaner |
|
|
| Conference or book title: |
|
XXXVI Latin American Conference on Informatics (CLEI 2010) |
|
| Conference date: |
|
2010-10 |
|
| City: |
|
Asunción |
|
| Country: |
|
Paraguay |
|
|
| Comment: |
|
http://www.clei.cl/cleiej/paper.php?id=214 |
|
|
Export this paper
