Numerical Analysis of Cooling Air Systems in Film Blowing
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D. Wolf
Abstract
Air rings, used today in film blowing systems, have been developed down the years through trial and error experiments. They represent the limiting factor concerning the efficiency of film blowing lines with respect to throughput and take-off speed. Numerical simulation of the cooling process in film blowing provides a tool for the design and optimization of future cooling systems. Individual process and geometric parameters can be changed interactively with the effects on flow and heat transfer processes being analysed and applied to similar situations. The knowledge acquired regarding the physical interactions in the cooling of blown film makes a targeted optimization possible. The purpose of this paper is to present the foundamentals for calculating turbulent air flows in blown film extrusion and, additionally, a model for complete FE-simulation of the flow and heat transfer processes. Furthermore, the achieved simulation results will be discussed.
© 1997, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Screw Extrusion
- Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
- Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
- Mixing
- A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
- Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
- Fibers
- The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
- Numerical Analysis of Cooling Air Systems in Film Blowing
- Moulding
- On the Simulation of Thermoplastic Injection Moulding Process
- Molding
- Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
- Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
- The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Screw Extrusion
- Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
- Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
- Mixing
- A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
- Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
- Fibers
- The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
- Numerical Analysis of Cooling Air Systems in Film Blowing
- Moulding
- On the Simulation of Thermoplastic Injection Moulding Process
- Molding
- Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
- Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
- The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
