COMPARATIVE ANALYSIS OF TURBULENCE MODELS
E. P. Sukhovich

UDC 532.517.4

A comparative analysis is performed for a complete 
locally anisotropic turbulence model of the second order and existing 
turbulence models. The comparison draws on experimental data, data 
of a direct numerical simulation of the nonstationary Navier-Stokes 
equations for a developed channel flow and a uniform channel flow 
with a constant velocity shift, and results for turbulence damping 
behind a grid. The K- model and the quasi-isotropic turbulence 
model are shown to have marked disadvantages, especially in describing 
turbulent flows with a high degree of anisotropy of pulsatory motion. 
Use of a locally anisotropic turbulence model improves the accuracy 
of determining Reynolds stresses. Consideration is given to the advantages 
and disadvantages of the turbulence models discussed.

JEPTER74920200016
JEPTER7492016