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Title :Mixing Characteristics of Liquid Phase in an Unbaffled Vessel Agitated by Unsteadily Forward-Reverse Rotating Multiple Impellers
Authors :Yoshida, Masanori
Taguchi, Yoji
Yamagiwa, Kazuaki
Ohkawa, Akira
Abe, Masahiko
Tezura, Shuichi
Shimazaki, Masuo
Publisher :Universidad Nacional del Sur
Issue Date :Mar-2004
Journal Title :Latin American applied research
Volume :34
Issue :1
Start Page :35
End Page :40
ISSN :0327-0793
Abstract :Mixing characteristics of liquid phase in an unbaffled vessel containing water with a liquid height-to-diameter ratio of 2 agitated by unsteadily forward-reverse rotating multiple impellers, a cross type of impellers with four delta blades (CDs), were experimentally studied in comparison with that in a baffled vessel agitated by steadily unidirectionally rotating disk turbine impellers with six flat blades (DTs). For the forward-reverse as well as unidirectional modes of operation, the mixing time in multiple impeller system was larger than that in single impeller system with a liquid height-to-diameter ratio of 1. The ratio of mixing time in multiple impeller system to that in single impeller system was small for the forward-reverse agitation mode compared with that for the unidirectional agitation mode. The result was discussed in relation to the difference in bulk flow pattern between the unbaffled vessel with forward-reverse rotating CDs and the baffled vessel with unidirectionally rotating DTs.
Keywords :mixing time
unbaffled agitation vessel
unsteadily forward-reverse rotating impeller
multiple impeller system
bulk flow pattern
Type Local :学術雑誌論文
Language :eng
Format :application/pdf
URI :http://hdl.handle.net/10191/26466
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/26466/1/34_1_35-40.pdf
Appears in Collections:10 査読済論文 = Postprint

Please use this identifier to cite or link to this item: http://hdl.handle.net/10191/26466