Turbulent Drag Reduction in Taylor-Couette Flows Using Super-Hydrophobic Surfaces and Liquid-Infused Surfaces

2019 ◽  
Author(s):  
Mohd. S. Naim ◽  
O. Khawar ◽  
MF Baig ◽  
Mehul Varshney
Keyword(s):  
Drag Reduction ◽  
Hydrophobic Surfaces ◽  
Turbulent Drag Reduction ◽  
Turbulent Drag ◽  
Taylor Couette

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

Turbulent drag reduction by spanwise oscillations of a ribbed surface

2013 ◽  
Vol 48 (4) ◽  
pp. 461-470 ◽  
Author(s):  
I. S. Vodop’yanov ◽  
N. V. Nikitin ◽  
S. I. Chernyshenko
Keyword(s):  
Drag Reduction ◽  
Turbulent Drag Reduction ◽  
Turbulent Drag
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