| The cooling and heat exchange’s ability of blast furnace tuyere is an essential factor whichdetermines the length of using time, and the heat exchange’s ability mainly depends on thedesigning of cooling cavity structure. To test the heat transfer capability, this paper usescomputational fluid dynamics (CFD) software to simulate the process of heat exchange, analyzethe working condition and optimize its structure. The result of simulation indicates that this wayis a simple, efficient, reliable and scientific method.The Fluent software is employed to the subject of heat transfer simulation and structureoptimization. By analyzing the result of the heat transfer simulation and cooling process, it canlook for relationship between some parameters which impact tuyere’s function. On account ofthis, this paper puts forward schemes of improving structure to achieve a new type of optimizedmodel. The research of this dissertation can be mainly summarized as follows.Firstly, the3D designing software is used to design a type of tuyere model. The modelincludes two parts, one part is fluid area, which is named cooling water body parts, and anotheris solid area, which is named copper body area.Secondly, the heat transfer process for blast furnace tuyere is simulated using a fluidsolidcoupling method: First, the mold is meshed, and then, using Fluent numerical simulation analysissoftware, selecting the best calculation model, giving a precise definition of physical property inthe fluid and solid area, and setting correctly boundary conditions, the solving results can beobtained. Simulation result is in accord with experimental data.Finally, based on simulation results for the heat transfer and flow characteristics of thetuyere sleeve, a structure improvement on the blast furnace tuyere is made, and the simulation forthe heat transfer characteristic of the improved tuyere is conducted. The simulation results showthat the improved tuyere has a good heat dissipation characteristic. |
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