| Abstract: | An attempt was made to numerically compute the temperature profile within the melt spinning filament without assuming axisymmetry and using the data on the variation of the coefficient of heat transfer from a cylinder cooled by cross flow of air as given by Eckert.4 The computed constant-temperature contours were approximately concentric circles with their center shifted from the filament center in the downstream direction of the cooling air flow. A filament yarn melt spun under spinning conditions corresponding to the computation was dyed, and its cross sections were observed under the microscope. The border between the dyed and undyed portion of the cross sections approximately coincided with one of the computed temperature contours, suggesting indirectly the general validity of the computed temperature profile. |
