Simulation Of Flow Around Open Storage Pile Based On Different Porosity Of Dust Net Model

Dust pollution of outdoor yard in the air particles atmospheric environment is one of the most important pollution sources, using dustproof net is one of the effective measures to prevent dust in open yards, dustproof nets choice depends on the material properties of outdoor yard and the meteorological conditions of he location. The shelting effects of dustproof nets depends on all kinds of physical parameters and set mode, these physical parameters including the height and width, length, porosity, thickness, of which the choice of porosity is the important factor of flow field distribution after dustproof nets and plays a decisive role. At present, research to dustproof nets limitations are2d and most uniform porosity field of study. For3d uniform porosity, there is still not the system research, and the study’s conclusion of non-uniform porosity is not clear. This paper will take the lead in a systems analysis and research for the uniform and non-uniform porosity the three-dimensional flow field around LengXing pile after dustproof nets, In order to obtains the rules of three-dimensional flow field of the LengXing after pile non-uniform dustproof nets and even dust prevention nets and does a judge for the effection of even dust prevention nets, thus to give certain guidance for the application of dustproof nets in engineering.This article mainly has two parts:one is the flow field simulation and analysis of three-dimensional flow field of the LengXing after the uniform dustproof nets. In this study, the flow field simulation models of different porosity dustproof nets are set, they are calculated by using the k-ε numerical model and Simple algorithm to get the change rules of three-dimensional flow field. Part ii of this article are non-uniform porosity numerical simulation research, on the basis of uniform porosity numerical simulation, the same dustproof net is divided into four different plane which can be set up different porosity, thus the different non-uniform porosity numerical simulation models are calculated and the results are abtained and compared with the numerical simulation results of the uniform porosity dustproof nets’models.The flow fields of the flow wind through the uniform and non-uniform porosity dustproof nets and later LengXing pile of obstacles are studied in the first time and the obtained results are analyzed, which apply to certain guidance for the application of dustproof nets in engineering.