Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-27T02:05:49.571Z Has data issue: false hasContentIssue false
  • English
  • Français

Dem Application to Mixing and Segregation Model in Industrial Blending System

Published online by Cambridge University Press:  01 February 2011

Kenji Yamane
Kenji Yamane*
Affiliation:
Quality Control Department Taiho Pharmaceutical Co., Ltd. Tokusima 770–0194, Japan
Get access

Abstract

To predict the motion of powders and grains is important in pharmaceutical industries. Many pharmaceutical engineers have studied granular flows related to powder mixing. In this study, DEM (Discrete Element Method) approach is presented as an industrial application to investigate the behavior of granular flows. The granular motion in a rotating cylinder was focused on the basic study of DEM for industrial application. Rotating cylinder is a fundamental system for commercial blenders widely used in many industrial process. In addition, segregation of particles in a rotating cylinder is very interesting phenomena. Not only industrial engineers but also physicists research this segregation mechanism. DEM simulation showed radial segregation of two different size particles in a rotating cylinder. From the viewpoint of calculated granular temperature, radial segregation system was analyzed. Particle migration in axial direction, which is the source for axial segregation, was also shown by DEM simulation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 627: Symposium BB – The Granular State , 2000 , BB7.4
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Oyama, Y. (1939). Bull. Inst. Phys. Chem. Rep. (Tokyo), 18, 600 (in Japanese).Google Scholar
2. Nakagawa, M. (1994). Axial segregation of granular flows in a horizontal rotating cylinder. Chem. Eng. Sci. 49, 2540–2544 Google Scholar
3. Hill, K.M., Caprihan, A., and Kakalios, J. (1997). Bulk segregation in rotated granular material measured by Magnetic Resonance Imaging. Phys. Rev. Lett., 78, 50–53.Google Scholar
4. Donald, M.B. and Roseman, B. (1962). Mechanisms in a horizontal drum mixer. British Chem. Eng. 7, 749–753; Effects of varying the operating conditions of a horizontal drum mixer. Brit. Chem. Eng. 7, 823–827.Google Scholar
5. Savage, S.B (1993). Banding or pattern formation in horizontal drum mixers. In Bideau, D. and Hansen, A. (eds.) Disorder and Granular Media: 255–285. Amsterdam: North-Holland.Google Scholar
6. Bridgwater, J., Sharpe, N.W., and Stocker, D.C. (1969). Particle mixing by percolation. Trans. Inst. Chem. Eng. 47, T114-T119.Google Scholar
7. Zik, O., Levine, D., Lipson, S.G., Shtrikman, S., and Stavans, J. (1994). Rotationally induced segregation of granular materials. Phys. Rev. Lett. 73, 644–647.Google Scholar
8. Hill, K.M. and Kakalios, J. (1995). Reversible axial segregation of rotating granular media. Phys. Rev. E 52, 4393–4400.Google Scholar
9. Tsuji, Y., Tanaka, T., and Ishida, T. (1992). Lagrangian numerical simulation of plug flow of cohesionless particles in a horizontal pipe. Powder Technology 71, 239–250.Google Scholar
10. Yamane, K., Nakagawa, M., Altobelli, S.A., Tanaka, T. and Tsuji, Y. (1998). Steady particulate flows in a horizontal rotating cylinder. Phys. Fluids 10, 1419–1427.Google Scholar
11. Cundall, P.A. and Strack, O.D. (1976). A discrete numerical model for granular assemblies. Geotechnique 12, 47–65.Google Scholar
12. Jenkins, J.T. and Hanes, D. M. (1993). The balance of momentum and energy at an interface between colliding and freely flying grains in a rapid granular flow, Phys. Fluids A 5 (3), 781–783.Google Scholar