TOMOGRAPHIC OBSERVATIONS OF THE FLOW AROUND AGITATOR IMPELLER

To make clear the local flow around each blade of an agitator, tomographic observations and measurements were carried out with a rotating camera and a plane-light source. As the result, the profiles of local flow around an impeller look like a saw-tooth wave from a rotating coordinate projected on a...

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Published inJOURNAL OF CHEMICAL ENGINEERING OF JAPAN Vol. 4; no. 1; pp. 66 - 72
Main Authors TAKASHIMA, IWAO, MOCHIZUKI, MASAFUMI
Format Journal Article
LanguageEnglish
Published Tokyo The Society of Chemical Engineers, Japan 01.01.1971
Taylor & Francis Group
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Summary:To make clear the local flow around each blade of an agitator, tomographic observations and measurements were carried out with a rotating camera and a plane-light source. As the result, the profiles of local flow around an impeller look like a saw-tooth wave from a rotating coordinate projected on a horizontal plane, while the profiles of flow along top and bottom sides of each blade seems to be a pair of helicoids. Two flow models, named vorfex seef model and single vortex model are proposed to explain the action of agitator blade and the flow characteristics near the impeller.
ISSN:0021-9592
1881-1299
DOI:10.1252/jcej.4.66