Polymer heat transport enhancement in thermal convection: the case of Rayleigh-Taylor turbulence
arXiv:1001.3314 · doi:10.1103/PhysRevLett.104.184501
Abstract
We study the effects of polymer additives on turbulence generated by the ubiquitous Rayleigh-Taylor instability. Numerical simulations of complete viscoelastic models provide clear evidence that the heat transport is enhanced up to 50% with respect to the Newtonian case. This phenomenon is accompanied by a speed up of the mixing layer growth. We give a phenomenological interpretation of these results based on small-scale turbulent reduction induced by polymers.
4 pages, 5 figures
References in corpus (5)
- Effect of a polymer additive on heat transport in turbulent Rayleigh-Bénard convection
- Self-Similarity and Universality in Rayleigh-Taylor, Boussinesq Turbulence
- Small scale statistics of viscoelastic turbulence
- Nonlinear diffusion model for Rayleigh-Taylor mixing
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Cited by in corpus (7)
- Polymers in Fluid Flows
- Effects of polymer additives in the bulk of turbulent thermal convection
- Rotating Rayleigh-Taylor turbulence
- Effects of polymer additives on Rayleigh-Taylor turbulence
- Buoyancy-driven flow through a bed of solid particles produces a new form of Rayleigh-Taylor turbulence
- Experimental observation of the elastic range scaling in turbulent flow with polymer additives
- Elastic Pseudoturbulence in Polymer Solutions