Surfactant effects on passive scalar transport in a fully developed turbulent flow

被引：30

作者：

Handler, RA ^{[1
]}

Leighton, RI

Smith, GB

Nagaosa, R

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2003年 / 46卷 / 12期

关键词：

surfactant; turbulence; direct numerical simulation; infrared imagery;

D O I：

10.1016/S0017-9310(02)00526-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Direct numerical simulations of fully developed turbulence in an open channel were performed. Effects of surfactants on heat transfer and the underlying turbulent structures were investigated. As surface elasticity is increased turbulent fluctuations are damped and the mean surface temperature is decreased. A surface strain model is introduced to explain this behavior in a heuristic manner. A nondimensional parameter representing the ratio of surface elastic forces to local inertial forces is introduced. It is concluded that for values of the parameter of order one, surfactants have strong effects on surface turbulence, whereas an effectively clean surface can be obtained for parameter values less than O(10(-3)). Published by Elsevier Science Ltd.

引用

页码：2219 / 2238

页数：20

共 27 条

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