文章基本信息

标题：Study on the Drag Reducing Channel Fluids by Experiments and DNS Using Giesekus Model:
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作者：Weiguo Gu ; Dezhong Wang ; Yasuo Kawaguchi 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2014
卷号：6
页码：1-7
DOI：10.1155/2014/175059
语种：English
出版社：Sage Publications Ltd.
摘要：Both experimental and numerical studies are simultaneously performed for fully developed water and surfactant solution channel flow. The comparison aims at the surfactant solution flow in experiment with mass concentration of 25 ppm at Re = 1000 and Giesekus model with Weissenberg numbers of 10 and 40 at Reτ = 150. Big differences are found between the experimental and DNS results by comparing the distributions of velocity fluctuations, Reynolds shear stress, and so on. Although large drag reduction appears in DNS, Giesekus model has some limitations in describing the fluid characteristics and viscoelasticity of the surfactant solution.