Small scale statistics of viscoelastic turbulence
arXiv:nlin/0606043 · doi:10.1209/epl/i2006-10222-6
Abstract
The small scale statistics of homogeneous isotropic turbulence of dilute polymer solutions is investigated by means of direct numerical simulations of a simplified viscoelastic fluid model. It is found that polymers only partially suppress the turbulent cascade below the Lumley scale, leaving a remnant energy flux even for large elasticity. As a consequence, fluid acceleration in viscoelastic flows is reduced with respect to Newtonian turbulence, whereas its rescaled probability density is left unchanged. At large scales the velocity field is found to be unaffected by the presence of polymers.
7 pages, 4 figures
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Cited by in corpus (6)
- Dispersed fibers change the classical energy budget of turbulence via nonlocal transfer
- Drag enhancement and drag reduction in viscoelastic flow
- Polymer heat transport enhancement in thermal convection: the case of Rayleigh-Taylor turbulence
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