Stochastic Intermittency Fields in a von Karman Experiment

Jürgen Schmiegel*, Flavio Pons

*Corresponding author af dette arbejde

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Abstract

We discuss the application of stochastic intermittency fields to describe and analyse the statistical properties of time series of the generalised turbulence intensity in an anisotropic and inhomogeneous turbulent flow and provide a parsimonious description of the one-, two-, and three-point statistics. In particular, we show that the three-point correlations can be predicted from observed two-point statistics. Our analysis is motivated by observed stylised features of the energy dissipation in homogeneous and isotropic situations where these statistical properties are well represented within the framework of stochastic intermittency fields. We find a close resemblance and conclude that stochastic intermittency fields may be relevant in more general situations.

OriginalsprogEngelsk
Artikelnummer1752
TidsskriftSymmetry
Vol/bind13
Nummer9
Antal sider14
ISSN2073-8994
DOI
StatusUdgivet - sep. 2021

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