Viscous dissipation in packed beds
✍ Scribed by Hung-jye Lin; Scaba Horváth
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 793 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-2509
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## Abstract The flow of polymer melts in cylindrical, annular, and slit dies has been examined. Large temperature rises at the outer surface of the extrudate were measured with an infrared pyrometer. Calculations show that severe radial temperature gradients exist in these flow geometries under con
The heat transfer between a fluid flowing through a packed bed and the wall is interpreted according to a one-dimensional model characterized by an overall heat transfer coefficient, h, and by two-dimensional models with one parameter, the effective thermal conductivity, k, or two parameters, the ef