Fluid Acceleration in the Bulk Turbulence of Dilute Polymer Solutions

Abstract

We report experimental measurements of Lagrangian accelerations in the bulk of intense turbulent flows of dilute polymer solutions by following tracer particles with a high-speed optical tracking system. We observed a significant decrease in the acceleration variance in dilute polymer solutions. The shape of the normalized acceleration probability density functions, however, remain the same as in Newtonian water flows. We also observed an increase in the turbulent Lagrangian acceleration autocorrelation time in these dilute polymer solutions.

5 pages, 4 figures

References in corpus (12)

• Particles and fields in fluid turbulence
• Elastic turbulence in a polymer solution flow
• Fluid Particle Accelerations in Fully Developed Turbulence
• Measurement of Particle Accelerations in Fully Developed Turbulence
• Experimental Lagrangian Acceleration Probability Density Function Measurement
• Spectra of turbulence in dilute polymer solutions
• Colloquium: Theory of Drag Reduction by Polymers in Wall Bounded Turbulence
• The 3D structure of the Lagrangian acceleration in turbulent flows
• On the Turbulent Dynamics of Polymer Solutions
• On Turbulence of Polymer Solutions
• Identification and Calculation of the Universal Maximum Drag Reduction Asymptote by Polymers in Wall Bounded Turbulence
• Two-way coupling of FENE dumbbells with a turbulent shear flow

Cited by in corpus (8)

• Polymers in Fluid Flows
• Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives
• Effects of polymer additives in the bulk of turbulent thermal convection
• Polymer scission in turbulent flows
• Control of particle clustering in turbulence by polymer additives
• Small scale dynamics of a shearless turbulent/non-turbulent interface in dilute polymer solutions
• Experimental observation of the elastic range scaling in turbulent flow with polymer additives
• Turbulence of Dilute Polymer Solution