.png){kind=icon}
.png){kind=icon}
Return
A numerical method for sharp-interface simulations of multicomponent alloy solidification
.png){kind=icon}
OA
AI
DOI：10.1016/j.jcp.2023.112494.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
We present a computational method for the simulation of the solidification of multicom-ponent alloys in the sharp-interface limit. Contrary to the case of binary alloys where a fixed point iteration is adequate, we hereby propose a Newton-type approach to solve the non-linear system of coupled PDEs arising from the time discretization of the governing equations, allowing for the first time sharp-interface simulations of the multialloy solidification. A combination of spatially adaptive quadtree grids, Level-Set Method, and sharp-interface numerical methods for imposing boundary conditions is used to accurately and efficiently resolve the complex behavior of the solidification front. The convergence behavior of the Newton-type iteration is theoretically analyzed in a one-dimensional setting and further investigated numerically in multiple spatial dimensions. We validate the overall computational method on the case of axisymmetric radial solidification admitting an analytical solution and show that the overall method's accuracy is close to second order. Finally, we perform numerical experiments for the directional solidification of a Co-Al-W ternary alloy with a phase diagram obtained from the PANDATTM database and analyze the solutal segregation dependence on the processing conditions and alloy properties.(c) 2023 Elsevier Inc. All rights reserved.
Keywords:
Solidification
Multicomponent alloy
Dendritic growth
Stefan problem
Adaptive grid
Level-set method
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.8
Papers:
1.5W
Citations:
7.4W
