About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
Data Assimilation for Columnar Dendrite Growth Coupled with Large-Scale Phase-Field Simulations |
Author(s) |
Tomohiro Takaki, Ayano Yamamura, Shunsuke Kanki, Shinji Sakane, Hideyuki Yasuda |
On-Site Speaker (Planned) |
Tomohiro Takaki |
Abstract Scope |
The phase field (PF) method has been widely used to simulate dendrite growth during alloy solidification. However, the lack of material parameters is a major issue in PF simulations of dendrite growth. Experimentally, in-situ X-ray observations of dendrite growth of alloys have been performed using large synchrotron radiation facilities. Although a few hundred X-ray transmission images are required for 3D reconstruction in computed tomography (CT), dendrites continue to grow during imaging. Therefore, in particular, when the dendrite growth rate is high, the true 3D morphology cannot be obtained with conventional CT. To solve these issues in PF simulation and X-ray observation simultaneously, we are attempting to develop a data assimilation system coupled with large-scale PF simulations using a GPU supercomputer. In this study, we focus on columnar dendrite growth in directional solidification of binary alloys and present our work so far regarding data assimilation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Solidification, |