doi:10.16186/j.cnki.1673-9787.2020.5.12

Received:2019/11/26

Revised:2020/02/24

Published:2020/09/15

Experimental study on atomization characteristics of flywheel fogging system under negative pressure environment

GAO Guantao, LIU Zhichao, WEN Xiaoping, FANG Changshun, DU Zhenlei

School of Mechanical and Power Engineering， Henan Polytechnic University ，Jiaozuo 454000 ， Henan，China

Abstract:In order to explore the atomization characteristics of the flywheel fogging system under negative pressure environment，the simplified unsteady three-dimensional flow field simulation of the system was carried out by FLUENT software，and the experimental platform was built on the basis of the simulation. The Sauter mean diameter（SMD） of droplet at the outlet of the system was measured by LS-2000 split laser particle size analyzer. The effects of different flywheel speed and flywheel number on the Sauter mean diameter of droplet， fog flux and the maximum range of fog field in negative pressure environment were analyzed. The experimental results showed that with the increase of flywheel speed， the Sauter mean diameter of droplet decreased at first and then increased，while the maximum range of fog field decreased at first and then increased ， but for fog flux，it growed gradually. When the speed was 1 200 r/min， the Sauter mean diameter of droplet was the smallest， which was 88. 6 μm. In addition， with the increase of the number of flywheels， the increasing trend of fog flux was obvious，on the contrary，the effect on the Sauter mean diameter of droplet was not obvious.

Key words:flywheel fogging;negative pressure environment;atomization characteristic;numerical simulation

负压环境下飞轮造雾系统雾化特性试验研究_高冠涛.pdf