Lagrangian perspectives on turbulent superstructures in Rayleigh‐Bénard convection
PAMM(2019)
摘要
We analyze large‐scale patterns in three‐dimensional turbulent convection in a horizontally extended square convection cell by means of Lagrangian particle trajectories calculated in direct numerical simulations. Different Lagrangian computational methods, i.e. finite‐time Lyapunov exponents, spectral and density‐based clustering and transfer operator approaches, are used to detect these large‐scale structures, which are denoted as turbulent superstructures of convection.
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关键词
turbulent superstructures,lagrangian perspectives
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