Modeling coal dust dispersion from pile with protection barriers

Mykola Biliaiev,Vitalii Kozachyna,Oleksandr Berlov,Pavlo Kirichenko,Viktoriia Poltoratska,Oladipo Mutiu Olatoye,Viktoriia Biliaieva,A Bulat,B Liu,Y Kryzhanivskyi,O Zhevzhyk,V Heyets,O Voloshyn

doi:10.1051/e3sconf/202016800021

Abstract

The results of laboratory studies to evaluate the effectiveness of barriers which are used to reduce dust pollution from the coal pile are presented. The use of the Г-shaped barrier, which is set differently near the coal pile model, has been studied. A numerical model is proposed to compute coal dust concentration in the air near the pile. The Navier–Stokes equations are used to model the wind flow over the coal pile. These equations are written in the variables “vorticity-stream function”. To simulate the process of coal dust dispersion from the coal pile, the equation of convective-diffusion transfer of the passive impurity is used. For numerical integration of the modeling equations, difference schemes of splitting are used. Developed numerical model allows to perform numerical experiments taking into account the complex geometric shape of the pile and screens. The results of the computational experiments are presented.

Highlights

The coal industry has a negative impact on environmental pollution [9]
An analysis of scientific publications has shown that there is a shortage of CFD models in Ukraine that could be used to evaluate the efficiency of barriers to reduce dust pollution from coal piles
The results show that developed CFD model allows to take into account geometrical form of coal pile, geometrical form of protection barriers that is very important in this field of study

Summary

Introduction

The coal industry has a negative impact on environmental pollution [9]. Intensive atmosphere pollution takes place during coal transportation or storing coal in piles [1, 2, 8, 9]. One of the most effective methods of reducing atmosphere pollution near coal piles is application of protection barriers These protection barriers are located near the coal pile [7, 10, 11]. Often the Gaussian model is used [8] This model allows to calculate quickly the intensity and size of contamination zones, but it does not take into account the geometric shape of the coal pile, and the ability to use different protective measures. In this regard, this model can be used for "pilot" calculations. An analysis of scientific publications has shown that there is a shortage of CFD models in Ukraine that could be used to evaluate the efficiency of barriers to reduce dust pollution from coal piles

Objectives

Methods

Conclusion