Distribution Features of Multi-Phase Flow in DTB Crystallizer

Abstract:

The multi-scale features are the foundation of the inner laws existing in the multi-phase flow process. Computational fluid dynamics (CFD) method was used to study the inhomogeneous distribution and multi-scale features of the solid particles in DTB crystallizer. Suspension and flow field distributions of the particles under different stirring speed and different particle diameter were observed. The result showed: the higher the stirring speed, the smaller the particle diameter and the more homogeneous the suspension distribution. The inhomogeneous distribution of the particles in the crystallizer was mainly caused by vortex. The particle concentration was much lowers in the vortex center, meanwhile, the higher the stirring speed, the more the particles and vortex number, the vortex strength getting greater as well.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 3055-3061
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.3055
• Online since: February 2013
• Authors: Peng Jiang, Xue Kui Wang, Bao Liang Fang, Zuo Liang Sha
• Keywords: Computational Fluid Dynamics (CFD), Multi-Scale, Solid-Liquid Two-Phase Flow, Vortex

References

[1] J. Li, M. Kwauk, Chemical Engineering Science, 58 (2003) 521 – 535.

[2] Z.L. Sha, S. Poalosaari, Chemical Engineering Science, 55 (2000) 1797-1806.

[3] Y. Mori, Z.L. Sha, L.K. Marjatta, et al., Journal of Chemical Engineering of Japan, 2002, 35 (11): 1178-1187.

[4] Z.L. Sha, S. Palosaari, Journal of Chemical Engineering of Japan, 2002, 35(11): 1188-1195.

[5] M. Kwauk, J.H. Li, Fluidization regimes. Power Technology, 1996, 87(3): 193-202.

[6] H. Wei, J. Garside, Chemical Engineering Research & Design, 1997, 75(2): 219–227.

[7] F.T. Pinho, F.M. Piqueiro, M.F. Proenca, et al., The Canadian Journal of Chemical Engineering, 1997, 75(5): 832-842.

[8] L. Schiller, A. Nauman, Zeitschrift des Vereines Deutscher Ingenieure, 1933, 77: 318–320.