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Proceedings Paper

High order items of turbulent velocity fluctuations in the Kenics static mixer
Author(s): HuiBo Meng; YanFang Yu; JianHua Wu
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Paper Abstract

The turbulent flow characteristic of flowing velocity field in the Kenics static mixer (KSM) was studied by measuring the time series of pulsant velocity with Laser Doppler Anemometer. The probability density functions of the Cartesian velocity fluctuations were obtained and compared with the corresponding normal distributions. The deviation from the normal distribution described by skewness and flatness factors was analyzed quantitatively. The experimental results indicate that the value of Skewness fluctuates from -2.79 to 3.12 which mean that the distribution of velocity field is not a normal distribution, and the existence of coherent structure is pointed out by the distribution of Flatness of pulsant velocity with a range of 3~9.5.

Paper Details

Date Published: 31 December 2008
PDF: 7 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304Z (31 December 2008); doi: 10.1117/12.819739
Show Author Affiliations
HuiBo Meng, Tianjin Univ. (China)
YanFang Yu, Shenyang Institute of Chemical Technology (China)
JianHua Wu, Shenyang Institute of Chemical Technology (China)


Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)

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