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．
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.
出处
《力学与实践》
CSCD
北大核心
2006年第2期62-64,56,共4页
Mechanics in Engineering
基金
科技部科研院所技术开发研究专项基金项目(2004EG122133)资助
