Effects of rotation on temperature fluctuations in turbulent thermal convection on a hemisphere.

ABSTRACT: Rotation is present in many physical and geophysical systems and its role in determining flow properties and modifying turbulent fluctuations is of crucial importance. Here we focus on the role of rotation on temperature fluctuations in turbulent thermal convection. The system used consists of a rotating half soap bubble heated from below. This system has features, curvature and a quasi two dimensional character, which are reminiscent of atmospheric and planetary systems. Our experiments and numerical simulations show that rotation changes the nature of turbulent fluctuations and a new scaling regime is obtained for the temperature field. This change in the scaling behavior of temperature fluctuations, due to rotation, is put forth by studying the so called second moment of temperature dif

SUBMITTER: Meuel T 

PROVIDER: S-EPMC6224521 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature