کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1670857 | 1008906 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of polymer–surfactant aggregates on drag reduction
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
When a water-soluble polymer and surfactant with addition of salt are mixed in water solution, the specific structures (aggregates) are formed, in which polymer film is formed around micelle. In a pipe flow, such aggregates take preferred orientation, according to minimum resistance principle. When the Reynolds number increases, the aggregates elongate.In this work, poly(ethylene oxide) (PEO)–cetyl trimethyl ammonium bromide (CTAB) complex formation and its effect on drag reduction was studied. It was found that PEO–CTAB aggregates reduced drag much more efficiently than these substances alone. Structure degradation appeared later and the drag reduction existed longer. Moreover, damaged structure could be partly rebuilt.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 516, Issue 24, 31 October 2008, Pages 8848–8851
Journal: Thin Solid Films - Volume 516, Issue 24, 31 October 2008, Pages 8848–8851
نویسندگان
Zbigniew Matras, Tadeusz Malcher, Barbara Gzyl-Malcher,