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1986•AIP conference proceedingsRequires access

Turbulent-flow interactions and drag reduction

J. W. Hoyt

Open publisher page 6 citations

Abstract

Some of the salient experimental observations in polymer drag reduction are reviewed, in light of basic concepts of turbulent flow. The areas common to drag reduction by polymers and surfactants, and drag reduction by fibers and suspensions in both liquids and gases are examined, and some general rules for obtaining friction reduction are suggested. Based on these ideas, the drag‐reducing properties of polymers, soap and surfactant aggregates, and fibers and solids are portrayed, noting the role of additive size and weight in producing the effect.

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What this paper is about

Some of the salient experimental observations in polymer drag reduction are reviewed, in light of basic concepts of turbulent flow. The areas common to drag reduction by polymers and surfactants, and drag reduction by fibers and suspensions in both liquids and gases are examined, and some general rules for obtaining friction reduction are suggested. Based on these ideas, the drag‐reducing properties of polymers, soap and surfactant aggregates, and fibers and solids are portrayed, noting the role of additive size and weight in producing the effect.

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Available abstract

Some of the salient experimental observations in polymer drag reduction are reviewed, in light of basic concepts of turbulent flow. The areas common to drag reduction by polymers and surfactants, and drag reduction by fibers and suspensions in both liquids and gases are examined, and some general rules for obtaining friction reduction are suggested. Based on these ideas, the drag‐reducing properties of polymers, soap and surfactant aggregates, and fibers and solids are portrayed, noting the role of additive size and weight in producing the effect.

Key concepts: Drag, Turbulence, Reduction (mathematics), Polymer, Flow (mathematics), Parasitic drag, Mechanics, Materials science

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