About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
CFD Modeling and Simulation in Materials Processing 2027
|
| Presentation Title |
Heat Transfer Calibration and Uncertainty Quantification in Modeling of Vacuum Arc Remelting
|
| Author(s) |
Levi Dickson, Matthew J. M. Krane |
| On-Site Speaker (Planned) |
Levi Dickson |
| Abstract Scope |
Vacuum Arc Remelting (VAR) is a major industrial remelting process for production of highly reactive metals and superalloys. Boundary conditions can be difficult to obtain due to extreme conditions during casting, and parametric studies or literature values have been used previously. Using a Markov Chain Monte Carlo (MCMC) analysis, the most probable heat transfer boundary conditions and their uncertainties are found. This work simulates VAR using a finite volume multicomponent solidification code that is calibrated to pilot scale Alloy 718 VAR castings via tungsten shot marked sump profiles. After calibration, the effect of the boundary condition, thermophysical, and solutal input uncertainty is propagated through the model and variability of selected outputs of interest are examined through uncertainty quantification (UQ) through the TASMANAIAN tool. Results of the UQ analysis are discussed in context in improving reliability of VAR modeling output predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Solidification, Process Technology |