| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals
|
| Presentation Title |
Ultrasonics in Levitating Droplets |
| Author(s) |
Catherine E H Tonry, Valdis Bojarevics, Georgi Djambazov, Andrew Kao, Koulis Pericleous |
| On-Site Speaker (Planned) |
Catherine E H Tonry |
| Abstract Scope |
High frequency electromagnetic coils can be used to induce ultrasound in liquid metals, due to the induced currents interacting with the magnetic fields. With resonant conditions, these acoustic pressures can be so large as to affect the evolving microstructure during solidification. This has been demonstrated in traditional casting techniques; however, this phenomenon has not been explored in levitated droplets of mm scale. At this smaller length scale the resonant frequency is on the order of 100 kHz, which is in the range of frequencies used by the levitating coil. This work investigates the conditions for ultrasound inside levitating droplets, whether it is possible for cavitation to occur, and if this can influence undercooled solidification. Preliminary numerical modelling results suggest typical conditions used for levitating droplets are close to these resonant conditions and therefore small changes to existing experiments could potentially lead to a new scientifically interesting avenue of study. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, |