| 放射性气溶胶冲击式采样器的设计与研究 |
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| 引用本文： | 刘建军,赵立宏.放射性气溶胶冲击式采样器的设计与研究[J].现代机械,2014(6). |
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| 作者姓名： | 刘建军 赵立宏 |
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| 作者单位： | 南华大学机械工程学院; |
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| 基金项目： | 湖南省科技厅重大专项(2012FJ1007) |
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| 摘 要： | 为了提高冲击式采样器的捕集效率,以放射性气溶胶采样器为研究对象,利用斯托克原理计算冲击板的各个参数,并采用CFD软件对采样器喷嘴口处的空气场进行流场仿真。结果表明:减少采样器冲击板的冲击长度S可以缩小喷嘴处流场的负压区域,进而提高采样器捕集效率。
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| 关 键 词： | 冲击式采样器 气溶胶 捕集效率 冲击板 |
The design and research on impuls type sampler of radioactive aerosol |
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| Abstract: | In order to improve the trapping efficiency of the impact type sampler,this paper takes impact type sampler of radioactive aerosol as the research object. Storck principle is employed to calculate all parameters of the impact plank,and computational fluid dynamics( CFD) software is used to simulate the air flow field of the sampler nozzle port. The results show that reducing the impact length of the sampler's impacting plank can reduce the area of negative pressure of the air flow field at the nozzle,so as to improve the sampler's capture efficiency. |
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| Keywords: | impuls type sampler aerosol trapping efficiency impacting plank |
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