Analysis of local velocity gradients in rapid mixer using particle image velocimetry technique

Recognizing the significance of factual velocity fields in a rapid mixer, this study focuses on analyzing local velocity gradients in various mixer geometries with particle image velocimetry (PIV) and comparing the results of the analysis with the conventional G-value, for reviewing the roles of G-value in the current design and operation practices. The results of this study clearly show that many arguments and doubts are possible about the scientific correctness of G-value, and its current use. This is because the Gvalue attempts to represent the turbulent and complicated factual velocity field in a jar. Also, the results suggest that it is still a good index for representing some aspects of mixing condition, at least, mixing intensity. However, it cannot represent the distribution of velocity gradients in a jar, which is an important factor for mixing. This study as a result suggests developing another index for representing the distribution to be used with the G-value.
Publisher
Iwa Publishing
Issue Date
2002
Language
ENG
Citation

WATER SCIENCE AND TECHNOLOGY, v.2, no.6, pp.47 - 55

ISSN
0273-1223
URI
http://hdl.handle.net/10203/10249
Appears in Collection
CE-Journal Papers(저널논문)
  • Hit : 176
  • Download : 3
  • Cited 0 times in thomson ci

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0