Abstract
A single-crystal hollow turbine blade was taken as the typical part to estimate the interfacial heat-transfer coefficient (IHTC) during investment-casting process. The experimental scheme was followed to measure the temperature distributions during the casting process by the tungsten-rhenium (W-Re) thermocouples. Using the finite-element methodology and the measured temperatures during the casting process, the time-dependent interfacial heat-transfer coefficient was studied by inverse heat-conduction analysis. The empirical formula for the time-dependent interfacial heat-transfer coefficient can be established. The calculation results are in good agreement with the experimental results, and the accuracy of the casting numerical simulation is improved effectively.
| Original language | English |
|---|---|
| Pages (from-to) | 2123-2131 |
| Number of pages | 9 |
| Journal | Journal of Materials Processing Technology |
| Volume | 211 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2011 |
Keywords
- Interfacial heat transfer coefficient
- Inverse method
- Investment casting
- Numerical simulation
- Temperature field