書誌事項
- タイトル別名
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- Drag-Reducing Effect of Nonionic Surfactant Solutions(Fluids Engineering)
- 非イオン性界面活性剤水溶液の抵抗低減効果
- ヒイオンセイ カイメン カッセイザイ スイヨウエキ ノ テイコウ テイゲン コウカ
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There are a few studies on the drag-reducing effect of nonionic surfactant solutions which are nontoxic and biodegradable, while a lot of investigations for cationic surfactant solution have been performed so far. First, the drag-reducing effects of nonionic surfactant solutions such as oleyldimethylamineoxide (ODMAO) and alkyl polyglycoside (APG) were investigated by measuring the pressure drop in the pipe flow. Second, we investigated the drag-reducing effect of a nonionic surfactant on the turbulent boundary layer using a two-component laser-Doppler velocimetry (LDV) and particle image velocimetry (PIV) systems. At the temperature of nonionic surfactant solutions T=25℃, the maximum drag reduction ratios for ODMAO 500ppm and APG 6000ppm were about 50% and 15%, respectively, in the boundary layer flow, although the drag reduction ratio for both surfactant solution was larger than 60% in pipe flow. Turbulence statistics and structures for ODMAO 500ppm showed the behavior of typical dragreducing flow such as suppression of turbulence and modification of near-wall vortices, while velocity fields for APG 6000ppm were similar to those of water.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 75 (756), 1598-1607, 2009
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206296849536
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- NII論文ID
- 110007339876
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 10422245
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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