| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Research in Reduced Gravity
|
| Presentation Title |
CAPTN Simulation of Dendritic Grain Structures |
| Author(s) |
Yijian Wu, Oriane Senninger, Charles-Andre Gandin |
| On-Site Speaker (Planned) |
Charles-Andre Gandin |
| Abstract Scope |
The Cellular Automaton - Parabolic Thick Needle (CAPTN) method is developed to compute dendritic microstructures. A dendritic branch is modeled as a cylinder headed by a parabolic tip. Its kinetics is computed using the composition field in the liquid in the vicinity of the parabola. Implementation involves the finite element method together with adapted mesh. The dendritic branch takes part in the definition of a grain envelope by its integration in a cellular automaton growth algorithm. Application is demonstrated to competition taking place among columnar dendritic grains forming as a result of directional solidification and to the growth equiaxed dendritic grains, both in two and three dimensions. Results are compared with existing numerical solutions, showing promising results for application to experiments conducted in reduced gravity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, |