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 Analysis of Shark Skin Riblet Surfaces for Fluid Drag Reduction in Turbulent Flow Regime

2019 ◽  
Vol 9 (1S4) ◽  
pp. 666-668
Keyword(s):  
Fluid Flow ◽  
Flow Field ◽  
Turbulent Flow ◽  
Drag Reduction ◽  
Flow System ◽  
Shark Skin ◽  
Structured Surfaces ◽  
Turbulent Flow Regime ◽  
Fluid Drag ◽  
Fluid Drag Reduction

: The integument of fast swimming shark exhibits riblet inspired micro- structured surfaces oriented in the path of flow that will help to make lesser the wall drag in the tempestuous-flow system (turbulent flow). Design have been made for study and utilization, that has been recreate and refine as same as of the shark-skin riblets, presuming an extreme drag depletion of nearly 10% (percent). Mechanism of fluid drag in tempestuous flow and riblet drag depletion theories from experiments and simulations are examined. An examination of riblet intrepratation are discussed and the stellar riblet sizes are defined. An assessment of studies experimenting with riblets-topped shark scale replicas is also discussed. A method for preferring stellar riblet dimensions based on fluid-flow attributes is briefed and current manufacturing approaches are summarized. Due to the existence of little amounts of mucus/booger membranes on the integument of the shark, it is presumed that the constrained application of aqua phobic materials will recast the flow field around the riblets in some way favorable to the goals of augmented drag depletion

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
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