摘要
颗粒物特别是空气动力学直径在2.5μm及以下的细颗粒物(PM2.5)对人体健康会造成严重危害,其浓度大小是衡量空气质量好坏的一个重要指标,对其进行检测时需要一种切割器。首先采用冲击式设计准则计算出斯托克斯数,再用Fluent6.3进行参数建模,然后按此设计加工出切割器样品,并按照国家标准进行测试。实验证明,该样品得到捕集效率的拟合曲线满足国家标准及设计要求。
The particles, especially those with aerodynamic diameter less than or equal to a nominal 2. 5 μm (PM2. 5) will cause serious harm to the human health, and its concentration is one of the main indexes for evaluating the environmental air quality, so the particle measurement needs a portable cutter. First, the impact design criteria was used for calculating the Stokes number, then the parameter model was established with Fluent6. 3, and finally, baed on this design, a cutter sample was manufactured and test was made on it according to the national standards. The test proved that the fitting curve of the collection efficiency obtained by this sample met the national standard and design requirements.
出处
《矿业安全与环保》
北大核心
2015年第2期32-34,38,共4页
Mining Safety & Environmental Protection
