摘要
建立了一个带有粒径高分辨率的亚微米颗粒物的动力学模型,应用高精密仪器SMPS做了系列实验以对模型进行验证.结果表明:采用该模型能够比较准确地预测亚微米颗粒物的粒径谱演变,同时模型显示了对不同峰值形态粒径谱的适应性;表面沉积效应对超细微粒的影响更为明显,凝并与浓度值有着密切的关系;通过亚微米颗粒物的数量浓度和CMD(Count Median Diameter)的变化可以反映凝并的动态特征.
A highly size-resolved aerosol dynamic model was established, and a high performance instru- ment was employed to validate the model, As a conclusion, the model is considered to be able to precisely predict the size spectra evolution of the submicron particles, and the model shows the adaptability to spectrum with different peak shapes. Through modeling, the effect of surface deposition on ultrafine particle is revealed more obvious, and coagulation has close relationship with the concentration level, and the dynamic characteristic of coagulation can be reflected by the variations of number concentration and CMD（Count Median Diameter）.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2007年第10期1710-1713,共4页
Journal of Shanghai Jiaotong University
关键词
亚微米颗粒物
沉积
凝并
模型
submicron particle
deposition
coagulation
model
