๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Optimally amplified large-scale streaks and drag reduction in turbulent pipe flow

โœ Scribed by Willis, Ashley P.; Hwang, Yongyun; Cossu, Carlo


Book ID
127310415
Publisher
The American Physical Society
Year
2010
Tongue
English
Weight
779 KB
Volume
82
Category
Article
ISSN
1063-651X

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Drag reduction and random surface renewa
โœ J.M.H. Fortuin; P.-J. Klijn ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 892 KB

A model for the boundary layer of a fully-developed turbulent pipe flow is presented in which the boundary layer is assumed IO consist of lumps which are. defined as fluid elements of laminar flow with unsteady velocity profiles and random ages. A burst is considered as the sudden replacement of a l

Drag reduction effectiveness of dilute a
โœ Nicholas B. Wyatt; Casey M. Gunther; Matthew W. Liberatore ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 583 KB

The ability to reduce the frictional drag in turbulent flow in pipes and channels by addition of a small amount of a high molecular weight polymer has application in myriad industries and processes. Here, the drag reduction properties of the polyelectrolyte xanthan are explored in differing solvent

Experimental research on drag reduction
โœ Shao Xueming; Lin Jianzhong; Wu Tao; Li Yulin ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 434 KB ๐Ÿ‘ 1 views

## Abstract In order to investigate the effects of injection position on drag reduction as well as further the effects of polymer additives on turbulent structures, LDA measurements of turbulent pipe flows were conducted. The results show that the amount of drag reduction grows with the increase of

Temperature and concentration influence
โœ Ferhat Hadri; Anthony Besq; Sylvain Guillou; Rachid Makhloufi ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 659 KB

Some additives, like surfactants or polymers, in aqueous solutions lead to dramatic drag reducing effects. Classically the range of concentration of surfactant additive is greater than 500 ppm. It was recently demonstrated that an aqueous solution of CTAC/NaSal (cetyltrimethyl ammonium chloride and