Distributive Mixing Performance and Mixing Efficiency of Discs in a Series Disc-Screw Extruder

Abstract:

This work aims at the simulation of three-dimensional isothermal flow between a pair of discs in series disc-screw (SDS) extruder by computational fluid dynamics. To analyze the distributive mixing performance and overall efficiency of discs, mixing parameters such as segregation scale and time-average efficiency were calculated. The effects of the disc configuration and the distance between a pair of discs on the distributive mixing were discussed. The more grooves on the disc, the better distributive performance. Good distributive mixing performance can be obtained by big gaps.

• Periodical: Advanced Materials Research (Volume 221)
• Pages: 411-417
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.221.411
• Online since: March 2011
• Authors: Jing Yang, Bo Jiang
• Keywords: Distributive Mixing Performance, Instantaneous Efficiency, Numerical Simulation, Segregation Scale, Series Disc-Screw Extruder

References

[1] Li.A., Jiang.B., Xu.S.H.: Polymer Materials Science and Engineering，Vol. 21(2005), pp.35-39.

[2] Danckwerts P.V. : Applied Scientific Research, Vol. 3(1952), pp.279-296.

[3] Ottino J.M., Chella.R.: Polymer Engineering and Science, Vol. 23(1983), pp.357-379.

[4] Ottino J.M., Ranz W.E., Macosko, C. W.: Chemical Engineering Science, Vol. 34(1979): 877-890.

[5] Ottino J.M., Ranz .W.E., Macosko. C. W.: AIChE Jourmal, Vol. 27(1981), pp.565-577.

[6] Ottino J.M.: AIChE Jourmal, Vol. 27(1981), pp.184-192.

[7] Ottino J.M.: The Kinematics of Mixing: Stretching, Chaos and Transport, Cambridge University Press, Cambridge, UK(1989).