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A novel approach to determine the heat transfer coefficient in directional solidification furnaces
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Banan, Mohsen Wilcox, William R. Gray, Ross T. |
| Copyright Year | 1990 |
| Description | The heat transfer coefficient between a molten charge and its surroundings in a Bridgman furnace was determined using an approach utilizing in-situ temperature measurement. The ampoule containing an isothermal melt was suddenly moved from a higher temperature zone to a lower temperature zone. The temperature-time history was used in a lumped-capacity cooling model to evaluate the heat transfer coefficient between the charge and the furnace. The experimentally determined heat transfer coefficient was of the same order of magnitude as the value estimated by standard heat transfer calculations. |
| File Size | 857732 |
| Page Count | 27 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910005572 |
| Archival Resource Key | ark:/13960/t7vm95677 |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | Thermodynamics And Statistical Physics Temperature Measurement Cooling Directional Solidification Crystals Time Temperature Parameter Furnaces Ampoules Heat Transfer Coefficients Heat Transfer Bridgman Method Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
