Effect of secondary flows on Taylor-Aris dispersion

被引：29
|
作者：
Zhao, Hui [1 ]
Bau, Haim H. [1 ]
机构：
[1] Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA
来源：
ANALYTICAL CHEMISTRY | 2007年 / 79卷 / 20期
关键词：
D O I：
10.1021/ac701681b
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
We study theoretically the effects of secondary (transverse) flows on the Taylor-Aris dispersion of pressure-driven, open column flow in a conduit with a rectangular cross section and account for the interaction of solutes with the retentive coating on the conduit's surface. A few plausible means of inducing secondary flows (that are independent of the primary, pressure-driven, axial flow) are described. The Taylor-Aris dispersion coefficient is computed as a function of the secondary flow's pattern and intensity. By inducing secondary flows, one can significantly reduce dispersion.
引用
收藏
页码：7792 / 7798
页数：7
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