Space-time energy spectra in turbulent shear flows
Ting Wu, Guowei He
Abstract
This article reviews the recent theories and models of space-time energy spectra in turbulent shear flows. The review is based on the picture of turbulent passage proposed by Taylor's frozen-flow hypothesis and Kraichnan-Tennekes random sweeping hypothesis: convection of small-scale eddies by large-scale eddies with a certain distortion, which determines the peaks and bandwidths of space-time energy spectra. The data-refined stochastic models and data-based reconstruction models are examined. The linearized Navier-Stokes equations with random forcing for space-time energy spectra are also discussed.
Topics & Concepts
TurbulenceEddySpectral lineStatistical physicsSpacetimePhysicsDistortion (music)MechanicsSpace (punctuation)ConvectionShear (geology)Scale (ratio)Flow (mathematics)Space timeMeteorologyClassical mechanicsGeologyComputer scienceEngineeringQuantum mechanicsCMOSOperating systemOptoelectronicsPetrologyChemical engineeringAmplifierFluid Dynamics and Turbulent FlowsPlant Water Relations and Carbon DynamicsWind and Air Flow Studies