Numerical Simulation of Down-flow Field Characteristics and Dust Distribution Law of Dust-control and Dust-removal System in Fully-mechanized Heading Face
CHEN Song
Abstract：The flow field distribution characteristics of the integrated dust-control and dust-removal systems were analyzed when they were operated, the flow field of the wall-attached jet area and the impact area was studied. The change of the maximum jet velocity along the X-axis direction of the wall-attached jet area and the maximum pressure produced by the jet in the impact area were obtained. A physical model for numerical simulation was established through GAMBIT and from the analysis with FLUENT, it came to the conclusions that the impact jet changed the distribution law of the dust concentration in the roadway, a separation area was formed and the dust separation efficiency at the pole M can be up to 75% ~80%;when the dust-control and dust-removal systems were operated at the same time, the dust suppression efficiency at the simulated driver of the heading machine can be up to 90% ~95% and the site experimental value was 97. 84%, the simulated result was near to the experimental one, this indicated that the numerical simulation method is reliable.
Keywords：impinging jetwall-attached jetnumerical simulationdust concentrationdistribution law
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 24-27 )