| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Research in Reduced Gravity
|
| Presentation Title |
Convection during Modulation Calorimetry Experiments in Electromagnetic Levitation |
| Author(s) |
Gwendolyn P. Bracker, R. W. Hyers |
| On-Site Speaker (Planned) |
Gwendolyn P. Bracker |
| Abstract Scope |
During containerless processing, modulation calorimetry can be used to measure the specific heat and thermal conductivity of a molten sample. In electromagnetic levitation (EML), the power input by the levitation coils is modulated and the temperature response of the sample is analyzed to determine the thermophysical properties. However, the forced convection driven by the magnetohydrodynamic system accelerates the distribution of heat throughout the molten sample and increases the relaxation rate of thermal gradients within the sample. Recent advances in multiphysics models have incorporated the magnetohydrodynamics, fluid flow, and heat transfer to determine the distribution of temperature within the melt. By applying a transient model, a correlation between the observed temperature response and the thermal conductivity was examined in various systems. The updated models are being used to reevaluate data in the NASA-PSI system taken during the MSL-1 campaign to improve the accuracy of the measured thermal conductivity in various materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Modeling and Simulation, Other |