Self-similar drag reduction in plug-flow of suspensions of macroscopic fibers

JJJ Gillissen; JP Hoving

doi:10.1063/1.4766198

Self-similar drag reduction in plug-flow of suspensions of macroscopic fibers

JJJ Gillissen, JP Hoving

ChemE/Transport Phenomena

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

Physics of Fluids / Volume 24 / Issue 11 / LETTERS / 111702 (2012); (6 pages) Pipe flow experiments show that turbulent drag reduction in plug-flow of concentrated suspensions of macroscopic fibers is a self-similar function of the wall shear stress over the fiber network yield stress. We model the experimental observations, by assuming a central fiber network plug, whose radius is determined by the yield stress. According to the model the plug constrains the size of the turbulent eddies in the surrounding annulus, with the effect of a reduced friction factor as compared to Newtonian flow.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Physics of Fluids
Volume	24
Issue number	11
DOIs	https://doi.org/10.1063/1.4766198
Publication status	Published - 2012

Keywords

CWTS 0.75 <= JFIS < 2.00

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10.1063/1.4766198

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abstract = "Physics of Fluids / Volume 24 / Issue 11 / LETTERS / 111702 (2012); (6 pages) Pipe flow experiments show that turbulent drag reduction in plug-flow of concentrated suspensions of macroscopic fibers is a self-similar function of the wall shear stress over the fiber network yield stress. We model the experimental observations, by assuming a central fiber network plug, whose radius is determined by the yield stress. According to the model the plug constrains the size of the turbulent eddies in the surrounding annulus, with the effect of a reduced friction factor as compared to Newtonian flow.",

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AB - Physics of Fluids / Volume 24 / Issue 11 / LETTERS / 111702 (2012); (6 pages) Pipe flow experiments show that turbulent drag reduction in plug-flow of concentrated suspensions of macroscopic fibers is a self-similar function of the wall shear stress over the fiber network yield stress. We model the experimental observations, by assuming a central fiber network plug, whose radius is determined by the yield stress. According to the model the plug constrains the size of the turbulent eddies in the surrounding annulus, with the effect of a reduced friction factor as compared to Newtonian flow.

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Self-similar drag reduction in plug-flow of suspensions of macroscopic fibers

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