Print Email Facebook Twitter Self-similar drag reduction in plug-flow of suspensions of macroscopic fibers Title Self-similar drag reduction in plug-flow of suspensions of macroscopic fibers Author Gillissen, J.J.J. Hoving, J.P. Faculty Applied Sciences Department ChemE/Chemical Engineering Date 2012-11-08 Abstract 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. Subject boundary layer turbulencedrag reductionfibresfractalspipe flowshear turbulencesuspensionsyield stress To reference this document use: http://resolver.tudelft.nl/uuid:6db9a759-a930-482b-a5f5-0ccbeafb3e58 DOI https://doi.org/10.1063/1.4766198 Publisher American Institute of Physics ISSN 1070-6631 Source http://pof.aip.org/resource/1/phfle6/v24/i11/p111702_s1 Source Physics of Fluids, 24 (11), 2012 Part of collection Institutional Repository Document type journal article Rights © 2012 American Institute of Physics Files PDF Gillissen_2012.pdf 247.09 KB Close viewer /islandora/object/uuid:6db9a759-a930-482b-a5f5-0ccbeafb3e58/datastream/OBJ/view