Two-dimensional, homogeneous, isotropic fluid turbulence with polymer additives
arXiv:1207.4774 · doi:10.1103/PhysRevE.91.033013
Abstract
We present the most extensive direct numerical simulations, attempted so far, of statistically steady, homogeneous, isotropic turbulence in two-dimensional fluid films with air-drag-induced friction and with polymer additives. Our study reveals that the polymers (a) reduce the total fluid energy, enstrophy, and palinstrophy, (b) modify the fluid energy spectrum both in inverse- and forward-cascade regimes, (c) reduce small-scale intermittency, (d) suppress regions of large vorticity and strain rate, and (e) stretch in strain-dominated regions. We compare our results with earlier experimental studies; and we propose new experiments.
8 pages, 8 figures
References in corpus (2)
Cited by in corpus (12)
- Effect of polymer-stress diffusion in the numerical simulation of elastic turbulence
- On the Peterlin approximation for turbulent flows of polymer solutions
- Binary-Fluid Turbulence: Signatures of Multifractal Droplet Dynamics and Dissipation Reduction
- Melting of a nonequilibrium vortex crystal in a fluid film with polymers : elastic versus fluid turbulence
- Preferential Sampling of Elastic Chains in Turbulent Flows
- Preserving large-scale features in simulations of elastic turbulence
- Amplification of localized body forces in channel flows of viscoelastic fluids
- Two-dimensional magnetohydrodynamic turbulence with large and small energy-injection length scales
- Elasto-inertial Chains in a Two-dimensional Turbulent Flow
- Effect of internal friction on the coil-stretch transition in turbulent flows
- Uncertainty in Elastic Turbulence
- Effect of the background flow on the motility induced phase separation