Mine contra-rotating axial fan is widely used in mine ventilation field for its high gas volume, high efficiency, safety and reliability. In this paper, the mine contra-rotating axial fan is used as the research target. Firstly, the three-dimensional software Solidworks is used to build the three-dimensional geometric model of mine contra-rotating axial fan. Secondly, the effects of the hub ratio on the aerodynamic performance of fan is studied by using the computational fluid dynamics method. Results show that by increasing the hub ratio, the total-pressure of the mine contra-rotating axial fan is increased at the beginning and decreased in the end, and the efficiency of the mine contra-rotating axial fan is enhanced along with the increase of the hub ratio. Further analysis shows when hub ratio is set to 0.6, the three-dimensional flow is more rational than others. This research has great significance for optimization design of the mine contra-rotating axial fan.%矿用对旋式轴流通风机因其流量大、效率高、安全可靠等特点, 在矿山通风领域中应用十分广泛, 本文以矿用对旋式轴流通风机为研究对象, 首先运用三维Solidworks软件构建不同风机轮毂比的矿用对旋式轴流通风机三维几何模型, 然后利用计算流体力学软件Fluent分析不同风机轮毂比对矿用对旋式轴流通风机气动性能的影响, 结果表明:随着矿用对旋式轴流通风机轮毂比的增大, 矿用对旋式轴流通风机的全压会先增大而后减小, 而矿用对旋式轴流通风机的效率会不断增大.通过进一步对比不同轮毂下的矿用对旋式轴流通风机内部三维流场的流动状况可知, 当轮毂比为0.6时通风机三维流场的流动状况更为理想.研究结果对矿用对旋式轴流通风机的优化设计具有重要的指导意义.
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