Prof. Dr. B. Niethammer
Humboldt Universität Berlin
Model reduction in various coarsening processes in materials science
Abstract: Coarsening, that is the increase of typical length scales in a microstructure, plays a crucial role in the aging of materials. Two paradigms are Ostwald Ripening in a two phase mixture and grain growth in a polycrystalline material. We are interested in deriving macroscopic models which capture the essential features of the dynamics. However, even though both processes are driven by the reduction of a surface energy, the microscopic interactions are quite different. We compare for the two model examples several approaches to derive reduced models and discuss their validity.| Zeit: | Freitag, 17. Dezember 2004, 14.15 Uhr (Kaffee/Tee um 15.30) |
| Ort: | FU Berlin, Arnimallee 2-6, Raum 032 im EG |