This paper presents a parallel adaptation procedure (coarsening and re nement) for tetrahedral meshes in a distributed environment. Coarsening relies upon an edge collapsing tool. Re nement uses edge-based subdivision templates. Mesh optimization maintains the quality of the adapted meshes. Focus is given to the parallelization of the various components. Scalability requires repartitioning of t...

The continuum decomposition of the Fe-Cr alloys from initial phase separation to steady-state coarsening with concentrations varying from 25 at % Cr and 30 at % Cr to 33 at % Cr aged at 750 K was studied by utilizing three-dimensional phase-field simulations. The dynamic stages of separation of nanoscale Cr-enriched α' phase were distinguished by the evolution of the volume fraction, particle n...

We consider the demixing process of a binary mixture of two liquids after a temperature quench. Thermodynamics favors two domains of the two different equilibrium volume fractions with a characteristic interfacial layer. After an initial stage, the dynamics are thus driven by the reduction of the interfacial area. Therefore in large systems, one observes an increase in the typical length scale ...

Petrographical studies examining the development and variations of sub-solidus reactions recorded in the Toki granite represent the three-dimensional cooling pattern of this zoned pluton in Central Japan. Samples collected from 19 boreholes in the Toki granite show characteristics indicative of spatial variations in the extent of the sub-solidus reactions. Exsolution coarsening has produced mic...

Understanding the microstructural evolution in metallic alloys helps to control their properties and improve their performance in industrial applications. The emphasis of our study is the coarsening mechanisms of lamellar structures. Coarsening of lamellar structure is modeled numerically using Monte Carlo Potts method. The initial microstructure consists of alternating lamellae of phase A and ...

We consider an emulsion whose droplets contain a trapped species (insoluble in the continuous phase), and study the emulsion’s stability against coarsening via Lifshitz–Slyozov dynamics (Ostwald Ripening). Extending an earlier treatment by Kabalnov et al(Colloids and Surfaces, 24 (1987), 19-32), we derive a general condition on the mean initial droplet volume which ensures stability, even when ...