对旋风机轴向间距对其性能及流场的影响研究

发布时间：2018-04-30 00:18

  本文选题：对旋风机 + 轴向间距　； 参考：《煤炭工程》2017年05期

【摘要】：以FBD8.0对旋风机为研究对象,利用计算流体力学软件FLUENT对四种不同轴向间距下对旋轴流式通风机内部流场及其性能进行研究。结果表明随着两级叶轮轴向间距的增加,对旋风机效率先增大后减小;一定范围内增大轴向间距减小了两级叶轮的相互干涉,有利于气流均匀化;两级叶轮的相互干扰主要体现在第一级叶轮对第二级的干扰上,第二级对第一级叶轮有干扰但是作用不明显。轴向间距的减小则会使轴向间距内产生较严重的涡流现象,增加涡流损失。而过大的轴向间距不仅会增加风机的轴向尺寸,还会造成压力损失增加,导致风机压力、流量以及效率均有所降低。
[Abstract]:Taking FBD8.0 as the research object, the internal flow field and its performance of four kinds of counter-rotating axial fan with different axial spacing were studied by using computational fluid dynamics software FLUENT. The results show that with the increase of axial distance between the two stage impellers, the efficiency of the cyclone first increases and then decreases, and the increase of the axial spacing decreases the mutual interference of the two stage impellers in a certain range, which is beneficial to the uniformity of the air flow. The interaction between the two stage impellers is mainly reflected in the interference of the first stage impellers to the second stage impellers, and the second stage impellers interfere with the first stage impellers but the effect is not obvious. The decrease of the axial distance will result in serious eddy current phenomenon and increase the eddy current loss. Too large axial spacing will not only increase the axial size of fan, but also cause pressure loss, resulting in lower fan pressure, flow rate and efficiency.
【作者单位】： 太原理工大学机械工程学院;山西省矿山流体控制工程(实验室)技术研究中心;
【基金】：山西省21世纪初高等教育教学改革基金“基于卓越工程师培养的矿井提运排虚拟仿真实验教学系统开发与应用研究”(2015101004)
【分类号】：TD441
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本文编号：1822213