Abstract
Study of the thermal transport and material flow processes associated with the drawing of optical fiber in a graphite draw furnace require modeling of the radiative heat transfer from the furnace wall. Previous work has shown that accurate knowledge of the furnace heater element axial temperature distribution is essential for proper modeling of the radiative transfer process. The present work is aimed at providing this information, as well as generating a set of data for the study of radiation exchange in the furnace cavity. The experimental procedure involved mounting rods of different materials and diameters and feeding them axially within the furnace cavity. Each rod was instrumented with a C type thermocouple inserted through an axial hole along the centerline. The temperature measurements were used along with a numerical model for radiative-convective heat transfer in the furnace in order to obtain the furnace temperature profile. This is an inverse problem since the centerline temperature in the rod is known whereas the furnace thermal conditions are not known. The results obtained using the graphite rods suggest that the furnace temperature is not affected by rod size. A correlation equation was developed for future modeling use.
| Original language | American English |
|---|---|
| Pages (from-to) | 221-232 |
| Number of pages | 12 |
| Journal | Journal of Materials Processing and Manufacturing Science |
| Volume | 4 |
| Issue number | 3 |
| State | Published - Jan 1996 |
ASJC Scopus subject areas
- General Materials Science