| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals: Thermodynamics and Rate Phenomena
|
| Presentation Title |
The Oscillating Drop’s Sensitivity to Thermophysical Properties of the Melt and Flow Conditions in Electromagnetic Levitation Experiments |
| Author(s) |
Gwendolyn P. Bracker, Robert W. Hyers |
| On-Site Speaker (Planned) |
Gwendolyn P. Bracker |
| Abstract Scope |
Melt viscosity is an important parameter for a variety of models, including CFD; however, the high temperature and highly reactive nature of metallic melts requires non-contact processing techniques. The oscillating drop technique used to contactlessly measure the surface tension and viscosity of a levitated liquid. During these measurements, surface oscillations are excited in the molten sample and the viscosity measured as a function of the damping of the oscillations by the viscous dissipation of momentum. When other factors, including turbulent eddies, provide additional momentum dissipation, the damping coefficient of the oscillations reflects total losses of momentum. Transient magnetohydrodynamic models have been used to calculate the flow effects resulting from of the excitation pulse to determine the conditions in which the excitation pulse is likely to accelerate the internal flow into turbulent behavior. Further, the sensitivity of the induced flow to changes in the melt viscosity will also be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Other, Other |