Heterogeneous Drag Reduction Concepts and Consequences-Reference-Cited by-同舟云学术

Heterogeneous Drag Reduction Concepts and Consequences

Published:1998-12-01 Issue:4 Volume:120 Page:818-823
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Hoyer Klaus W.¹,Gyr Albert²

Affiliation:

1. Engineering Specialist, Eidetics Corporation, 3425 Lomita Blvd., Torrance, CA 90505

2. Institute of Hydromechanics and Water Resources Management, Swiss Federal Institute of Technology, Zurich, Switzerland

Abstract

This paper deals with the nature of the heterogeneous drag reduction which occurs in turbulent pipe flows when a concentrated polymer solution is injected into the pipe center. According to earlier concepts, the achieved drag reduction is due to a direct, large-scale interaction of the viscoelastic polymer thread with the turbulent flow field. The authors prove that the heterogeneous drag reduction originates exclusively from agglomerates of dissolved polymer molecules present in the flow.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/120/4/818/5900488/818_1.pdf

Reference34 articles.

1. Achia B. U. , and ThompsonD. W., 1977, “Structure of the Turbulent Boundary Layer in Drag-Reducing Pipe Flow,” Journal of Fluid Mechanics, 13 July, Vol. 81, part 3, pp. 439–64.

2. Berman, N. S., 1989, Large Eddies and Polymer Strings, Structure of Turbulence and Drag Reduction, Gyr A., ed., Springer-Verlag, Berlin, pp. 275–88.

3. Berman N. S. , 1986, “Velocity Fluctuations in Non-Homogeneous Drag Reduction,” Chem. Eng. Commun, Vol. 42, pp. 37–51.

4. Berner, C., Scrivener, O., 1980, “Drag Reduction and Structure of Turbulence in Dilute Polymer Solutions,” Viscous Flow Drag Reduction, Hough G. R., ed., Dallas, Texas, AIAA Inc. pp. 290–9.

5. Bewersdorff H.-W. , 1984, “Heterogeneous Drag Reduction in Turbulent Pipe Flow,” Rheologica Acta, Sept.-Oct., Vol. 23, No. 5, pp. 522–43.

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