scholarly journals Influnce of polymer additives on the transport process in drag reducing turbulent flow

2015 ◽  
Vol 64 (9) ◽  
pp. 094703
Author(s):  
Guan Xin-Lei ◽  
Wang Wei ◽  
Jiang Nan
Keyword(s):  
Turbulent Flow ◽  
Transport Process ◽  
Polymer Additives

Polymer additives reduce fluid drag in turbulent flow

Physics Today ◽  
1978 ◽  
Vol 31 (3) ◽  
pp. 17-19 ◽  
Author(s):  
H. Richard Leuchtag
Keyword(s):  
Turbulent Flow ◽  
Polymer Additives ◽  
Fluid Drag

scholarly journals Turbulent flow of oil-water emulsions with polymer additives

2014 ◽  
Vol 21 ◽  
pp. 012028 ◽  
Author(s):  
V N Manzhai ◽  
Monkam Monkam Clovis Le Grand ◽  
A V Abdousaliamov
Keyword(s):  
Turbulent Flow ◽  
Polymer Additives ◽  
Oil Water

Turbulent Flow of Dilute Aqueous Polymer Solutions

1967 ◽  
Vol 89 (4) ◽  
pp. 814-822 ◽  
Author(s):  
Y. Goren ◽  
J. F. Norbury
Keyword(s):  
Reynolds Number ◽  
Turbulent Flow ◽  
Drag Reduction ◽  
Polymer Concentration ◽  
Flow Characteristics ◽  
Detailed Examination ◽  
Turbulent Shear ◽  
Solid Boundary ◽  
Polymer Additives ◽  
Turbulent Shear Flow

This paper summarizes some of the research into the effect of polymer additives on turbulent shear flow, which was conducted at the University of Liverpool between October, 1964, and October, 1966. The paper contains a brief description of the research together with a summary of the principal results and conclusions. The present work was devoted to a detailed examination of the mechanism of a particular flow by gathering information on friction drag, velocity distribution, concentration distribution, and correlation with Reynolds number and polymer concentration level. The particular flow chosen was the fully developed turbulent flow in a 2-in-dia pipe of Polyox WSR-301 solutions. A maximum drag reduction of 71 percent was obtained at a Reynolds number of 1.5 × 105 for solutions having polymer concentration of 10 weight parts per million. The drag reduction effect occurred only above some “critical” Reynolds number which was independent of concentration. The polymer additives were found to influence the flow in the neighborhood of a solid boundary. In this zone of the flow, the eddy viscosity was found to be much lower than that of water. In the absence of a boundary, as in free jet flow, the polymer additives had no effect on the flow characteristics. The experiments showed for the first time that the polymer molecules were uniformly distributed across the pipe diameter under all turbulent flow conditions investigated. A method of determining polymer concentration was devised for this purpose.

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