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Abstract
摘要 |
The phenomenon of thermal turbulence occurs widely in nature, such as atmospheric and oceanic circulations; convection in the Earth mantel and its outer core; and in the Sun. A paradigm for the study of turbulent thermal convection is the Rayleigh-Bénard (RB) system. After a brief introduction of the system, I will show how RB convection can be used as a platform for studying problems that are relevant to some large-scale phenomena in nature, such as particle transport and mixing by turbulent flows in which buoyancy plays an important role. I will then discuss how RB systems can also be used to study heat transport problems that have potential for practical applications. Specifically, I will present results from our recent study of heat transport enhancements in RB convection with polymer additives and in confined geometries. |
