Influence of molecular weight and molecular conformation of polymers on turbulent drag reduction

1977 ◽  
Vol 16 (3) ◽  
pp. 309-316 ◽  
Author(s):  
E. Dschagarowa ◽  
G. Mennig
Keyword(s):  
Molecular Weight ◽  
Drag Reduction ◽  
Molecular Conformation ◽  
Turbulent Drag Reduction ◽  
Turbulent Drag

Turbulent drag reduction of polyacrylamide solutions: effect of degradation on molecular weight distribution

2004 ◽  
Vol 123 (2-3) ◽  
pp. 175-183 ◽  
Author(s):  
Matthew W. Liberatore ◽  
Seunghyun Baik ◽  
Anthony J. McHugh ◽  
Thomas J. Hanratty
Keyword(s):  
Molecular Weight ◽  
Drag Reduction ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Turbulent Drag Reduction ◽  
Turbulent Drag

scholarly journals Analysis of anisotropically permeable surfaces for turbulent drag reduction

2017 ◽  
Vol 2 (11) ◽  
Author(s):  
Nabil Abderrahaman-Elena ◽  
Ricardo García-Mayoral
Keyword(s):  
Drag Reduction ◽  
Turbulent Drag Reduction ◽  
Turbulent Drag

scholarly journals Fibre-induced drag reduction

2008 ◽  
Vol 602 ◽  
pp. 209-218 ◽  
Author(s):  
J. J. J. GILLISSEN ◽  
B. J. BOERSMA ◽  
P. H. MORTENSEN ◽  
H. I. ANDERSSON
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Reynolds Number ◽  
Drag Reduction ◽  
Elastic Layer ◽  
Turbulent Drag Reduction ◽  
Rigid Polymer ◽  
Fibre Concentration ◽  
Induced Drag ◽  
Turbulent Drag

We use direct numerical simulation to study turbulent drag reduction by rigid polymer additives, referred to as fibres. The simulations agree with experimental data from the literature in terms of friction factor dependence on Reynolds number and fibre concentration. An expression for drag reduction is derived by adopting the concept of the elastic layer.

scholarly journals Turbulent drag reduction in a dilute polymeric solution flowing through a fiber-implanted circular pipe.

1988 ◽  
Vol 21 (4) ◽  
pp. 441-443
Author(s):  
HIROTSUGU HATTORI ◽  
TOMOO YAMAUCHI ◽  
SEIICHI TANABE ◽  
HIDEOMI MATSUDA
Keyword(s):  
Drag Reduction ◽  
Circular Pipe ◽  
Turbulent Drag Reduction ◽  
Polymeric Solution ◽  
Turbulent Drag
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