Effect of a polymer additive on heat transport in turbulent Rayleigh-Bénard convection

Abstract

Measurements of heat transport, as expressed by the Nusselt number $Nu$, are reported for turbulent Rayleigh-Bénard convection of water containing up to 120 ppm by weight of poly-[ethylene oxide] with a molecular weight of $4\times 10^6$ g/mole. Over the Rayleigh number range $ 5\times 10^9 \alt Ra \alt 7 \times 10^{10}$ $Nu$ is smaller than it is for pure water by up to 10%.

3 pages, 2 figures

References in corpus (1)

• Colloquium: Theory of Drag Reduction by Polymers in Wall Bounded Turbulence

Cited by in corpus (7)

• Polymers in Fluid Flows
• Polymer heat transport enhancement in thermal convection: the case of Rayleigh-Taylor turbulence
• Effects of polymer additives in the bulk of turbulent thermal convection
• Heat transport by laminar boundary layer flow with polymers
• Effects of polymer additives on Rayleigh-Taylor turbulence
• Experimental observation of the elastic range scaling in turbulent flow with polymer additives
• Effect of Prandtl number on heat transport enhancement in Rayleigh-Bénard convection under geometrical confinement