| NEGRETTI采样头切割原理的动力学分析 |
| |
| 引用本文： | 杨书申,邵龙义.NEGRETTI采样头切割原理的动力学分析[J].力学与实践,2006,28(2):62-64,56. |
| |
| 作者姓名： | 杨书申 邵龙义 |
| |
| 作者单位： | 1. 中国矿业大学(北京)煤炭资源教育部重点实验室及资源与地球科学系,北京,100083;中原工学院数理系,郑州,450007
2. 中国矿业大学(北京)煤炭资源教育部重点实验室及资源与地球科学系,北京,100083 |
| |
| 摘 要： | 根据两相流体动力学理论对Negretti采样头中颗粒物的运动规律进行了分析,计算了PM10和 PM2．5采样时颗粒物的运动轨迹,通过计算讨论了气流流量、颗粒物粒径等不同情况下各种因素对颗粒物运动轨迹的影响．结果表明两相流动力学是对采样切割器中颗粒物的运动进行数值模拟的有效工具,能对采样头的设计、制造提供有力的帮助．
|
| 关 键 词： | 两相流体动力学 Negretti采样头 运动轨迹 切割粒径 |
| 收稿时间： | 2005-03-18 |
| 修稿时间： | 2005-03-182005-08-08 |
THE HYDRODYNAMIC ANALYSIS FOR CUTTING PRINCIPLE OF THE NEGRETTI SAMPLE HEAD |
| |
| YANG Shushen,SHAO Longyi.THE HYDRODYNAMIC ANALYSIS FOR CUTTING PRINCIPLE OF THE NEGRETTI SAMPLE HEAD[J].Mechanics and Engineering,2006,28(2):62-64,56. |
| |
| Authors: | YANG Shushen SHAO Longyi |
| |
| Institution: | 1.Key Laboratory of Coal Resources of Ministry of Education of China and the Department of Resources and Earth Sciences China University of Mining and Technology, Beijing 100083, China;2.Department of Mathematics and Physics, Zhongyuan Institute of Technology, Zhengzhou 450007, China |
| |
| Abstract: | According to two-phase hydrodynamic theories, the motion of the aerosol particles in a Negretti sample head is analyzed in this paper. The motion trajectory of the aerosol particles during the sampling of PM10 and PM2.5 is computed. The influence of various factors such as airflow flux, diameter of aerosol particles on the movement trajectory is discussed. The results show that the two-phase hydrodynamics is effective in simulating the motion of aerosol particles within an impactor. It can offer a powerful help for the design and manufacture of impactor. |
| |
| Keywords: | two phase hydrodynamics Negretti sample head movement trajectory diameter of cut off |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《力学与实践》浏览原始摘要信息 |
| 点击此处可从《力学与实践》下载免费的PDF全文 |
|
