Stochastic dynamical model for space-time energy spectra in turbulent shear flows
Ting Wu, Guowei He
Abstract
A dynamic autoregressive (DAR) random forcing model is proposed for space-time energy spectra in turbulent shear flows. This model starts with Taylor's convection model and introduces the DAR random forcing to represent the random sweeping effect. The DAR model is further combined with linear stochastic estimation (LSE) to reconstruct the near-wall velocity fluctuations.
Topics & Concepts
TurbulenceStatistical physicsAutoregressive modelStochastic modellingForcing (mathematics)Stochastic processPhysicsShear (geology)SpacetimeMechanicsGeologyMathematicsClassical mechanicsMathematical analysisEconometricsStatisticsQuantum mechanicsPetrologyFluid Dynamics and Turbulent FlowsWind and Air Flow StudiesPlant Water Relations and Carbon Dynamics