STUDY ON THE INFLUENCE OF TEMPERATURE ON THE SIZE OF PARTICLES DEPOSITED IN IMPACTOR

被引：0
|
作者：
Peng H. [1 ]
Chi H. [2 ]
Xu C. [1 ]
Yin Z. [1 ]
Bao F. [1 ]
Tu C. [1 ]
机构：
[1] College of Metrology and Measurement Engineering, Chinese Jiliang University, Hangzhou
[2] Fujian Metrology Institute, Fuzhou
来源：
Lixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics | 2024年 / 56卷 / 01期
关键词：
aerosol temperature; inertial impactor; Lagrangian multiphase model; particle collection efficiency; particle deposition;
D O I：
10.6052/0459-1879-23-316
中图分类号：
学科分类号：
摘要：
The properties of microparticles are almost closely related to the particle size. In order to study the characteristics of aerosol particles, it is necessary to obtain particle size distribution information. The inertial impactor is a device based on the principle of inertia to realize the deposition separation of particles of different sizes in the atmosphere. During actual use, it experiences complex and changeable environments. In this paper, the Lagrangian multiphase (LMP) model is used to numerically simulate the gas-solid two-phase flow in the impactor. The effect of aerosol temperature variation (−40 °C ~ 60 °C) on the particle deposition rate was investigated using the finite volume method (FVM) under both adiabatic and heat transfer conditions, and its effect on particle size separation was analyzed. The results show that: under the condition of wall adiabatic, as the temperature of the aerosol increases, the particle deposition position diverges from the center of the impact plate to the edge, the particle collection efficiency decreases, and the number of particle collection decreases gradually; in the condition of aerosol and wall heat transfer, as the temperature of the aerosol increases, the deposition position of large particles diverges from the center of the impact plate to the edge, and the collection efficiency of particles decreases, while the opposite is true for small particles. In addition, there is an intersection point in the particle collection efficiency curves at different aerosol temperatures, and the collection efficiency of large and small particles on both sides of the intersection point changes oppositely with temperature. By studying the influence of temperature on the impactor particle collection, the results of particle diameter separation can be modified and more accurate particle size distribution can be obtained. © 2024 Chinese Journal of Theoretical and Applied Mechanics Press. All rights reserved.
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页码：79 / 93
页数：14
相关论文
共 45 条
  • [1] Gen M, Ikawa S, Yamaguchi M, Et al., A plant growth chamber system equipped with aerosol generators for studying aerosol-vegetation interactions, Particuology, 85, pp. 122-132, (2024)
  • [2] Bemer D., Granular bed filtration of a liquid aerosol, Powder Technology, 395, pp. 218-225, (2022)
  • [3] Farkas A, Tomisa G, Kugler S, Et al., The effect of exhalation before the inhalation of dry powder aerosol drugs on the breathing parameters, emitted doses and aerosol size distributions, International Journal of Pharmaceutics: X, 5, (2023)
  • [4] Wang JW, Zhang Y, Chen XL, Et al., Targeted delivery of inhalable drug particles in a patient-specific tracheobronchial tree with moderate COVID-19: A numerical study, Powder Technology, 405, (2022)
  • [5] Zhang XY, Bao Z, Zhang LY, Et al., Biomass burning and aqueous reactions drive the elevation of wintertime PM2.5 in the rural area of the Sichuan basin, China, Atmospheric Environment, 306, (2023)
  • [6] Xu K, Liu YF, Li CL, Et al., Enhanced secondary organic aerosol formation during dust episodes by photochemical reactions in the winter in Wuhan, Journal of Environmental Sciences, 133, pp. 70-82, (2023)
  • [7] Gong J, Qi JH, Beibei E, Et al., Concentration, viability and size distribution of bacteria in atmospheric bioaerosols under different types of pollution, Environmental Pollution, 257, (2020)
  • [8] Bonzini M, Tripodi A, Artoni A, Et al., Effects of inhalable particulate matter on blood coagulation, Journal of Thrombosis and Haemostasis, 8, 4, pp. 662-668, (2010)
  • [9] Chen Jing, Synthesis of core-shell micro-sphere materials applied in plate display, (2018)
  • [10] Lupu FC, Munteanu C, Sachelarie AC, Et al., Improving the usage properties of steel using cold spray deposition: A review, Crystals, 13, 2, (2023)
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