Comparison of turbulence models for two-phase flow in a centrifugal separator

Erkin Madaliev,Kamol Adilov,Murodil Madaliev,Tohir Pulatov,D Bazarov

doi:10.1051/e3sconf/202126401009

Abstract

The numerical results of mathematical modeling of a two-phase, axisymmetric swirling turbulent flow in the separation zone of a centrifugal separator are presented. The movement of the carrier gas flow was modeled using RANS, which were closed using the SARC turbulence models, the SST-RC model, and the SSG/LRR-RSM-w2012 model. For the numerical solution of the problem, the SIMPLE algorithm was used. The article compares the results of numerical calculation of turbulence models. The results of a comparison of numerical calculations with allowance for the effect of the solid phase on the dynamics of the air medium and without taking it into account with experimental data are presented.

Highlights

Centrifugal separators are widely used in many sectors of the national economy
Shows the dispersed composition of dust from the separator hopper according to the analyzer for U вх 5.5 m / s and according to the numerical calculation from the above-described non-linear SSG / LRR-RSM model, taking into account the effect of the solid phase on the air flow dynamics, linear model SARC taking into account the influence of the solid phase on the airflow dynamics and the SST-RC model taking into account the effect of the solid phase on the airflow dynamics at
The considered problems of a centrifugal separator show that modeling of swirling turbulent flows requires a special approach to turbulence models

Summary

Introduction

Centrifugal separators are widely used in many sectors of the national economy. The design of new models and the improvement of existing designs are closely related to analyzing the processes taking place inside these separators. In pneumatic separators, the air is used as a working medium, and the structures themselves have a complex geometric shape. In this case, the flow regimes are always turbulent and anisotropic. The flow regimes are always turbulent and anisotropic Physical modeling of such processes is expensive and time-consuming. Methods of mathematical modeling can be considered a promising way to successfully solve the problem of finding the velocity field while obtaining analytical solutions is almost impossible or associated with a low degree of reliability. The only way to solve the problems posed is numerical simulation method [1, 2]

Methods

Results

Conclusion