Delay of Disorder by Diluted Polymers

Details Delay of Disorder by Diluted Polymers Delay of Disorder by Diluted Polymers

2005-11-19

arxiv.org/abs/physics/0511174v1

Physics

Fluid Dynamics

Scientific paper

10.1209/epl/i2006-10124-7

We study the effect of diluted flexible polymers on a disordered capillary wave state. The waves are generated at an interface of a dyed water sugar solution and a low viscous silicon oil. This allows for a quantitative measurement of the spatio-temporal Fourier spectrum. The primary pattern after the first bifurcation from the flat interface are squares. With increasing driving strength we observe a melting of the square pattern. It is replaced by a weak turbulent cascade. The addition of a small amount of polymers to the water layer does not affect the critical acceleration but shifts the disorder transition to higher driving strenghs and the short wave length - high frequency fluctuations are suppressed.

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