Numerical simulation on the flow field of swirling flow air curtain aspiration control dust in fully mechanized workface
Abstract：According to the characteristics of the flow field of swirling flow air curtain aspiration control dust in fully mechanized workface with pane wall of fan drum,k-ε and k-ε-Θ-kp were used respectively,and mathematical model of single-phase air flow and two-phase flow of air-dust particle were established.The air flow and dust diffusion numerical simulation was performed based on collocated grid SIMPLE algorithms,using of Fluent software.The result shows that the swirl flow air curtain which closed whole road section basically in front driver of roadheader is formed by the system of flow field of swirling flow air curtain aspiration control dust in fully mechanized workface,and dust can be enclosed in range of 0.5 m from tunnelling place to the driver of roadheader front to prevent from diffusing in other regions.According to the simulation results and the practical condition of mining face,full-heading face swirl air curtain aspiration control dust system which are made of fan drum attached wall and drawing dust purification device was designed.After the application of this system in comprehensive mechanized mining faces,dust concentration of each working place are effectively reduced.It achieves good dustfall effect.
Keywords：fully mechanized workfaceswirl flow air curtainaspiration control dustk-ε-Θ-kp mathematical modelair flowdust
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)