Flow topology dynamics in a three-dimensional phase space for turbulent Rayleigh-Bénard convection
F. Dabbagh, F. Xavier Trias, A. Gorobets, A. Oliva
Abstract
A very hard turbulent regime of the classical Rayleigh-B\'enard convection problem is accessed using direct numerical simulations (5.7 billion grid points) with the aim of obtaining a deeper understanding of the small-scale dynamics and flow topology. The outcomes attest to the strong self-growth of strain production augmented by vortex contraction, and the linear amplification of vortex stretching relevant to the strain-dominated structures.
Topics & Concepts
TurbulenceVortexRayleigh–Bénard convectionConvectionMechanicsTopology (electrical circuits)Flow (mathematics)Rayleigh scatteringPhysicsSpace (punctuation)Rayleigh numberMathematicsNatural convectionComputer scienceOpticsOperating systemCombinatoricsFluid Dynamics and Turbulent FlowsPlant Water Relations and Carbon DynamicsMeteorological Phenomena and Simulations