𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Drag reduction and random surface renewal in turbulent pipe flow

✍ Scribed by J.M.H. Fortuin; P.-J. Klijn

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
892 KB
Volume
37
Category
Article
ISSN
0009-2509

No coin nor oath required. For personal study only.

✦ Synopsis

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 lump at the wall by a fluid

πŸ“œ SIMILAR VOLUMES

Drag reduction effectiveness of dilute a
Drag reduction effectiveness of dilute and entangled xanthan in turbulent pipe flow
✍ Nicholas B. Wyatt; Casey M. Gunther; Matthew W. Liberatore πŸ“‚ Article πŸ“… 2011 πŸ› Elsevier Science 🌐 English βš– 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
Experimental research on drag reduction by polymer additives in a turbulent pipe flow
✍ Shao Xueming; Lin Jianzhong; Wu Tao; Li Yulin πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 434 KB πŸ‘ 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

Drag reduction and structural turbulence
Drag reduction and structural turbulence in flowing polyox solutions
✍ R. C. Little; M. Wiegard πŸ“‚ Article πŸ“… 1970 πŸ› John Wiley and Sons 🌐 English βš– 483 KB πŸ‘ 1 views

## Abstract Structural turbulence has been detected in dilute aqueous solutions of Polyox Coagulant (also known to be a highly effective drag‐reducing agent). The flow line which characterizes structural turbulence from its onset in the laminar region passes well into the fully turbulent region (Re