Properties of the aerosol particle (AP) is important to understanding the formation of fog-haze, and even for the evolution of climate. Based on the mesoscale large-eddy simulation model of ARPS and with the consideration of gravitation deposition (GD), the diffusion process of AP with three diameters of 10 m , 50 m and 100 m over complex terrain are investigated. Simulation results show that the diffusion of AP with different diameter exist differences and universality. For the AP with smaller diameter of 10 m , the diffusion range along stream direction and height is very large due to the stronger fluid following and the slight GD properties. While for the AP medium diameter of 50 m , the diffusion range along stream direction decreases rapidly but less changed along height. Under the strongly GD effect, the diffusion range of AP with diameter of 100 m along two direction is very small. For all AP with different diameter, the diffusion height trends to a steady state and exist a "overshoot" phenomenon obviously.
Wet removal efficiency of aerosol particles (AP) are investigated in this paper, three main theory models of AP coalescence, water droplets (WD) capture, and supersaturated vapor phase are introduced. Grade removal efficiency (GRE) versus AP diameter is numerical obtained and compared with experimental data only under the WD capture. Then, the influence of WD diameter on GRE is examined. Simulation results show that GRE can be effectively improved with decreasing WD diameter especially for AP in the 0.1-2.5um diameter range. Furthermore, the removal rate under three mechanisms is increased greatly. Therefore, taking advantage of multiple mechanisms and exploring the proper wet removal technical will provide the guide for the future application.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.