| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Research in Reduced Gravity
|
| Presentation Title |
Transient Convective Transport during Undercooled Droplet Solidification |
| Author(s) |
Andrew Kao, Valdis Bojarevics, Catherine Tonry, Koulis Pericleous |
| On-Site Speaker (Planned) |
Andrew Kao |
| Abstract Scope |
Undercooled solidification of droplets allows us to understand the very fundamentals of solidification. However, convective transport can have a significant impact on the evolution of the microstructure. To achieve undercooling, electromagnetic levitation is necessary under terrestrial conditions and that inevitably leads to gravity-driven fluid flow that alters microstructure. While in microgravity, this effect is much weaker and leads to a clearer understanding of how solidification progresses. In this paper we couple the transient coupled behaviour as the microstructure solidifies to the fluid flow that is present at nucleation, to understand how critical measurements, such as tip growth velocity, may change. This effect is especially important in the low undercooled regime where fluid flow has time to adapt to the solidification front. A parallel numerical model coupling an enthalpy-based method for solidification to a Lattice Boltzmann method for fluid flow is used to simulate this problem. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Solidification, Computational Materials Science & Engineering |