Pipe Flow and Rheology of Cationic Surfactant Solutions

Drag reduction caused by the addition of a cationic surfactant (Ethoquad O/12) and rheological characteristics of the surfactant solutions were experimentally investigated. It was found that the addition of 200-500 ppm Ethoquad O/12 was enough to obtain an effective drag reduction. This amount of ad...

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Bibliographic Details
Published inKAGAKU KOGAKU RONBUNSHU Vol. 22; no. 1; pp. 221 - 225
Main Authors Usui, Hiromoto, Saeki, Takashi, Ito, Takayasu, Sakai, Rieko
Format Journal Article
LanguageJapanese
Published Tokyo The Society of Chemical Engineers, Japan 01.01.1996
Kagaku Kōgaku Kyōkai
Subjects
Cationic Surfactant
Drag Reduction
Energy
Surfactant Additive
Turbulence Control
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ISSN0386-216X
1349-9203
1349-9203
DOI10.1252/kakoronbunshu.22.221

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Summary:Drag reduction caused by the addition of a cationic surfactant (Ethoquad O/12) and rheological characteristics of the surfactant solutions were experimentally investigated. It was found that the addition of 200-500 ppm Ethoquad O/12 was enough to obtain an effective drag reduction. This amount of addition was much lower than the previous reports. Also, Ethoquad O/12 caused a significant drag reduction even at lower temperature range adequate for cooling system. Apparent viscosity of Ethoquad O/12 solutions was measured over a wide range of shear rate. Numerical analysis for laminer pipe flow with radial variation of apparent viscosity resulted in partially successful explanation of velocity profile of surfactant pipe flow.
ISSN:0386-216X
1349-9203
1349-9203
DOI:10.1252/kakoronbunshu.22.221