| As China’s economic development and the increasing demand for coal, the large coalstorage warehouses are applied more widely, closed coal storage equipments are graduallyreplacing the old way of bulk mode, it can not only effectively reduce the loss in the quality andquantity in the process of storage, but also be good to protect the environment. In recent years,with the constant expansion of the power plants, the sizes of the coal storage warehouse are alsogrowing, the structures are more and more diverse. Also, such structures need relatively highdemands on the wind-resistant performance. The shape and material characteristics of thestructures determine that their damping is small, weight is light, they are large flexible and lowself-resonant frequency. Currently, for the general forms of the building,"Structural LoadNorms" has been clearly shown to the corresponding shape factor and wind vibration coefficient,but for the buildings of complex body, the changing flow field around it, it has been not giventhe corresponding specification design data, but we should get the wind pressure distributionthrough the wind tunnel tests, this method is effective but costly, long test cycle and can not berepeated.In recent years, as the rapid development of the computing software and hardwarecapabilities，computational wind engineering is being applied increasingly, the superiority of thenumerical wind tunnel is clearly reflected in the economy and time. By scholars at home andabroad for nearly30years of unremitting efforts, the researchers have applied a variety ofturbulence models, various forms of grid to rectangle, square, round and high-rise buildings,low-slope roofing systems， made so much research, and also obtain many remarkableachievements, especially the selections of calculation methods and turbulence models are inmaturity. Therefore, this work is based on the reliability of the numerical simulation isconfirmed.In this paper, in the background of a coal storage warehouse under construction in Ordos ofInner Mongolia for the project, using CFD software of FLUENT, SSTk-ω turbulence model andassumptions of coal gangue piles surrounding the coal storage warehouse，wind load and windinterference effects of the roofing are simulated. The first，the wind load of the cover of a drycoal shed was simulated, and the simulation results are compared with the existing wind tunneltest results to verify the feasibility of the numerical simulation methods and its accuracy; then， on the basis of this，the wind load on the coal storage warehouse roofing is simulated, simulationresults are analyzed, and some laws of pressure distribution on the surface are obtained; thefinal，the wind interference effects between the warehouse storage and the coal waste dump areanalyzed, and the influences to the wind pressure distribution of the different relative positions ofthe waste dump, the distances and the geometry sizes are studied.The study results can provide a reference for the wind-resistant designs of the similarlarge-span structures，and they have important engineering and test reference value. |
