Delay of Disorder by Diluted Polymers

Abstract

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.

References in corpus (7)

• Phase Diagram of the Two-Dimensional Complex Ginzburg-Landau Equation
• Droplet detachment and bead formation in visco-elastic fluids
• Faraday waves on a viscoelastic liquid
• Toward a structural understanding of turbulent drag reduction: nonlinear coherent states in viscoelastic shear flows
• Spatio temporal characterization of interfacial Faraday waves: A new absorption technique
• Theory of Concentration Dependence in Drag Reduction by Polymers and of the MDR asymptote
• Stretching of polymers in a turbulent environment

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