Enhancement of mixing performance of single-screw extrusion processes via chaotic flows: Part II. Numerical study
✍ Scribed by S. J. Kim; T. H. Kwon
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 936 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0730-6679
No coin nor oath required. For personal study only.
✦ Synopsis
In the accompanying articIe, Part I, we have described the basic mechanism of chaotic mixings due to a new "Chaos Screw" in single-screw extrusion processes, and presented experimental evidence of the chaotic mixing in a single-screw extruder with a typical Chaos Screw installed. The present article, Part 11, will be focused on the numerical investigations of the chaotic flows via the Chaos Screw in a single-screw extruder. The three-dimensional velocity fields in both the no-barrier and barrier regions were separately calculated via a finite element analysis of the quasi-three-dimensional flow in each region, and were subsequently used in the numerical simulations of chaotic flow behaviors. Extensive numerical simulation results will be presented in terms of particle trajectories, Poincark sections, and mixing patterns for several dimensionless parameters. It was found that invariant manifolds obtained by numerical simulations were in good agreement with those from experiments. 0 1996 John Wiley & Sons, Inc. Screw," which can cause chaotic flows in a singlescrew extruder, and have presented the experimental evidence of chaotic mixings due to the Chaos I * Currently at Department of Mechanical Engineering, Ant To whom all correspondence should be addressed. the complicated mixing patterns as shown-in the accompanying article, Part I, through Figures 10 and 11, which were experimentally obtained. With dong Univeristy.