ZHANG Qianyu,YU Mingzhou

(College of Mechanical and Electrical Engineering，China Jiliang University，Zhejiang 310000，China)

Abstract:In this paper,the correlation between the size structure and flow field parameters of the key part of Laminar condensed particle counter，laminar condensed particle growth device，was studied.Through the porous media material and the design of the corresponding internal structure,laminar condensed particle growth device is successfully developed,with the gas and liquid physical positions coincide but the flow fields are independent of each other.The water vapor evaporation rate obtained through the experiment of the device is coupled into the airflow flow field for simulation,and explore the influence of the sampling flow humidity,the temperature of the regulation section and the temperature of the growth section on the supersaturation distribution of the flow field inside the device.When the sampling flow humidity is 100%,the wall temperature of the adjusting section is 10 ℃,and the wall temperature of the growing section is 50 ℃,the optimal supersaturation 2.8 can be obtained.

Keywords:laminar flow;supersaturation;particle growth device;computational fluid dynamics

中图分类号：TH766                              文献标志码：A

文章编号：1008-5548(2020)05-0007-07

DOI:10.13732/j.issn.1008-5548.2020.05.002

收稿日期： 2020-03-14，修回日期：2020-04-28，在线出版时间：2020-07-08 16:03。

基金项目：浙江省“151”人才工程项目，编号：2017YFF0205501。

第一作者简介：张倩瑜(1996—)，女，硕士研究生，研究方向为微纳米颗粒粒径谱仪——冷凝器的开发研制。E-mail：s1801081124@cjlu.edu.cn。

通信作者简介：于明州(1979—)，男，博士，教授，硕士生导师，研究方向为流体力学气溶胶纳米颗粒。E-mail：yumz@ieecas.cn。