Paticle motion and flow structure in grid-generated turbulence with columnar particle dispersions

被引：0

作者：

Ito, Yasumasa ^{[1
]}

Yamana, Hiroshi ^{[1
]}

Komori, Satoru ^{[1
]}

机构：

[1] Department of Mechanical Engineering and Science, Advanced Research Institute for Fluid Science and Engineering, Kyoto University, Sakyo ku, Kyoto 606-8501, Yoshida-Honmachi

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2008年 / 74卷 / 08期

关键词：

Columnar particle; Flow visualization; Liquid-solid two phase flow; Turbulent flow;

D O I：

10.1299/kikaib.74.1770

中图分类号：

学科分类号：

摘要：

Particle motion and flow structure were experimentally investigated in grid generated turbulence with spherical or columnar particle dispersions. Particle motions were taken by a high speed video camera and instantaneous streamwise and horizontal velocities were measured using a PIV. The results show that columnar particles fall without clustering in the free falling particle experiment, whereas spherical particles form clusters during the falling process. Turbulence intensity in the grid-generated turbulence with columnar particle dispersion is larger than that in the turbulence with spherical particle dispersion. It is found by flow visualization that these differences in particle motion and fluid structure are attributed to the irregular horizontal movements and rotation of columnar particles.

引用

页码：1770 / 1776

页数：6

共 11 条

[1]

Elghobashi S., Appl. Sci. Res, 52, pp. 309-329, (1994)

[2]

Gore R.A., Growe C.T., Int. J. Multiphase Flow, 15, pp. 279-285, (1989)

[3]

Kajishima T., Int. J. Heat Fluid Flow, 25, pp. 721-728, (2004)

[4]

Kurose R., Komori S., J. Fluid Mech, 384, pp. 183-206, (1999)

[5]

Heiland E., Bournot H., Occelli R., Tadrist L., Chem. Eng. Sci, 62, pp. 148-158, (2007)

[6]

Rajitha P., Chhabra R.P., Sabiri N.E., Comiti J., Int. J. Miner. Processing, 78, pp. 110-121, (2006)

[7]

Arsenijevic Z.L., Grbavcic Z.B., Garic-Grulovic R.V., Zdanski F.K., Powder Technol, 103, pp. 265-273, (1999)

[8]

Chhabra R.P., Srinivas B.K., Powder Technol, 67, pp. 15-19, (1991)

[9]

Yin C., Rosendahl L., Kaer S.K., Sorensen H., Chem. Eng. Sci, 58, pp. 3489-3498, (2003)

[10]

Langston P.A., Al-Awamleh M.A., Fraige F.Y., Asmar B.N., Chem. Eng. Sci, 59, pp. 425-435, (2004)

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