... on radiative transport. The zonal method is applied to calculate the radiative heat transfer within the neck-down region of the preform. The radiative heat transfer between the preform and the furnace is computed by an enclosure analysis. A parallel computational scheme for determining the direct exchange...

... at the furnace exit; thus, it does not require specifying the speed (or diameter) of the fiber as most previous studies did. The model presented here can be applied to optimization of the high-speed draw process with large-diameter preforms. In this study, the radiative transfer equation is directly solved...

...H. M. Reeve; A. M. Mescher; A. F. Emery optical fibre fabrication natural convection heat radiation optical polymers heat transfer preforms drawing (mechanical) high-temperature techniques The following captions should read: Fig. 2 Numerically predicted contour plots...

...Hayden M. Reeve; Ann M. Mescher; Ashley F. Emery The force required to draw a polymer preform into optical fiber is predicted and measured, along with the resultant free surface shape of the polymer, as it is heated in an enclosed cylindrical furnace. The draw force is a function of the highly...