Transitions in turbulent rotating convection: A Lagrangian perspective.

Rajaei, Hadi; Joshi, Pranav; Alards, Kim M J; Kunnen, Rudie P J; Toschi, Federico; Clercx, Herman J H · Phys Rev E · 2016

basic_science · Level V

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Abstract

Using measurements of Lagrangian acceleration in turbulent rotating convection and accompanying direct numerical simulations, we show that the transition between turbulent states reported earlier [e.g., S. Weiss et al., Phys. Rev. Lett. 105, 224501 (2010)PRLTAO0031-900710.1103/PhysRevLett.105.224501] is a boundary-layer transition between the Prandtl-Blasius type (typical of nonrotating convection) and Ekman type.