Open AccessIsotropic turbulence correlation functions modelling on the basis of Karman-Howarth equation
Author(s) -
A. N. Kusyumov,
S. A. Mikhaǐlov,
S. A. Kusyumov,
Elena Romanova
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1675/1/012010
Subject(s) - isotropy , turbulence , closure (psychology) , mathematics , k epsilon turbulence model , plane (geometry) , homogeneous isotropic turbulence , mathematical analysis , k omega turbulence model , statistical physics , correlation function (quantum field theory) , geometry , physics , direct numerical simulation , mechanics , statistics , optics , reynolds number , spectral density , economics , market economy
A closure model for the von Karman-Howarth equation is considered. The offered algebraic closure model is based on a single spatial-point third-order correlation function, unlike the widely used models based on a distance between two separated points. The model holds for homogeneous isotropic turbulence theory. Numerical solution of the von Karman-Howarth equation for the flow behind a bi-plane grid of circular cylinders in comparison to experimental data is presented.