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Mechanics and prediction of turbulent drag reduction with polymer additives. (English) Zbl 1229.76043
Davis, Stephen H. (ed.) et al., Annual review of fluid mechanics. Vol. 40. Palo Alto, CA: Annual Reviews (ISBN 978-0-8243-0740-0/hbk). Annual Review of Fluid Mechanics 40, 235-256 (2008).
Summary: This article provides a review of recent progress in understanding and predicting polymer drag reduction (DR) in turbulent wall-bounded shear flows. The reduction in turbulent friction losses by the dilute addition of high-molecular weight polymers to flowing liquids has been extensively studied since the phenomenon was first observed over 60 years ago. Although it has long been reasoned that the dynamical interactions between polymers and turbulence are responsible for DR, it was not until recently that progress had been made to begin to elucidate these interactions in detail. These advancements come largely from numerical simulations of viscoelastic turbulent flows and detailed turbulence measurements in flows of dilute polymer solutions using laser-based optical techniques. This review presents a selective overview of the current state of the numerics and experimental techniques and their impact on understanding the mechanics and prediction of polymer DR. It includes a discussion of areas in which our understanding is incomplete, warranting further study.
For the entire collection see [Zbl 1128.76004].

76F70 Control of turbulent flows
76F40 Turbulent boundary layers
76A10 Viscoelastic fluids
76-02 Research exposition (monographs, survey articles) pertaining to fluid mechanics
76-05 Experimental work for problems pertaining to fluid mechanics
82D60 Statistical mechanical studies of polymers
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