Persistence–of–straining and polymer alignment in viscoelastic turbulence

Drag reduction in turbulent flows by the addition of polymers is a phenomenon that has a variety of applications in the engineering. The highly nonlinear interactions between the turbulent flow and the polymers in the polymeric solution still impose challenges to the understanding of this phenomenon...

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Autores principales:	Anselmo S. Pereira, Roney L. Thompson, Gilmar Mompean
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2020
Materias:	Viscoelastic turbulence Drag reduction Polymer alignment Non–persistence–of–straining tensor Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/3695f608ed5d4068bd3cf14a3e00c0c4
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spelling	oai:doaj.org-article:3695f608ed5d4068bd3cf14a3e00c0c42021-12-01T05:05:46ZPersistence–of–straining and polymer alignment in viscoelastic turbulence2666-496810.1016/j.apples.2020.100026https://doaj.org/article/3695f608ed5d4068bd3cf14a3e00c0c42020-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666496820300261https://doaj.org/toc/2666-4968Drag reduction in turbulent flows by the addition of polymers is a phenomenon that has a variety of applications in the engineering. The highly nonlinear interactions between the turbulent flow and the polymers in the polymeric solution still impose challenges to the understanding of this phenomenon. Efforts to address this problem come mainly from two sources: experiments and direct numerical simulations. In the present work we investigate through direct numerical simulations the roles of the non–persistence–of–straining tensor and the covariant strain acceleration tensor from the statistical and their alignment with the conformation tensor. In this regard, we provide a better picture of the relative orientation of this quantity.Anselmo S. PereiraRoney L. ThompsonGilmar MompeanElsevierarticleViscoelastic turbulenceDrag reductionPolymer alignmentNon–persistence–of–straining tensorEngineering (General). Civil engineering (General)TA1-2040ENApplications in Engineering Science, Vol 4, Iss , Pp 100026- (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Viscoelastic turbulence Drag reduction Polymer alignment Non–persistence–of–straining tensor Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Viscoelastic turbulence Drag reduction Polymer alignment Non–persistence–of–straining tensor Engineering (General). Civil engineering (General) TA1-2040 Anselmo S. Pereira Roney L. Thompson Gilmar Mompean Persistence–of–straining and polymer alignment in viscoelastic turbulence
description	Drag reduction in turbulent flows by the addition of polymers is a phenomenon that has a variety of applications in the engineering. The highly nonlinear interactions between the turbulent flow and the polymers in the polymeric solution still impose challenges to the understanding of this phenomenon. Efforts to address this problem come mainly from two sources: experiments and direct numerical simulations. In the present work we investigate through direct numerical simulations the roles of the non–persistence–of–straining tensor and the covariant strain acceleration tensor from the statistical and their alignment with the conformation tensor. In this regard, we provide a better picture of the relative orientation of this quantity.
format	article
author	Anselmo S. Pereira Roney L. Thompson Gilmar Mompean
author_facet	Anselmo S. Pereira Roney L. Thompson Gilmar Mompean
author_sort	Anselmo S. Pereira
title	Persistence–of–straining and polymer alignment in viscoelastic turbulence
title_short	Persistence–of–straining and polymer alignment in viscoelastic turbulence
title_full	Persistence–of–straining and polymer alignment in viscoelastic turbulence
title_fullStr	Persistence–of–straining and polymer alignment in viscoelastic turbulence
title_full_unstemmed	Persistence–of–straining and polymer alignment in viscoelastic turbulence
title_sort	persistence–of–straining and polymer alignment in viscoelastic turbulence
publisher	Elsevier
publishDate	2020
url	https://doaj.org/article/3695f608ed5d4068bd3cf14a3e00c0c4
work_keys_str_mv	AT anselmospereira persistenceofstrainingandpolymeralignmentinviscoelasticturbulence AT roneylthompson persistenceofstrainingandpolymeralignmentinviscoelasticturbulence AT gilmarmompean persistenceofstrainingandpolymeralignmentinviscoelasticturbulence
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Persistence–of–straining and polymer alignment in viscoelastic turbulence

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