Abrupt Reduction in Drag Reducing Ability of Cationic Surfactant Solution
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- Kim Chongyoup
- Department of Chemical and Biological Engineering and Applied Rheology Center, Korea University
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- Park Seong Ryong
- Korea Institute of Energy Research
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- Yoon Hyung-Kee
- Korea Institute of Energy Research
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- Haw Jung Rim
- Department of Materials Chemistry and Engineering
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The time dependent drag reducing ability of a surfactant solution was investigated experimentally from the viewpoint of developing the surfactant solution as a drag reducing fluid in district heating systems. Aqueous solutions of a cationic surfactant were subjected to turbulent pipe flows continuously to induce degradation. The results show that surfactant solutions lose their drag reducing ability abruptly after a stable period. In this study, this phenomenon is named ‘break-down’ of drag reducing ability. In the broken-down solution large aggregates of surfactant and fragments of surfactant molecules were found. The loss of birefringence was also observed under high shear-flow. The break-down phenomenon appears to be caused by the lowering of effective micelle concentration caused by the precipitation of surfactant molecules and chemical reactions of surfactant molecules with dissolved oxygen at high temperature.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 37 (11), 1326-1336, 2004
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204568769536
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- NII論文ID
- 130000019626
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- NII書誌ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 7163355
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可