Simultaneous phenomenon of particle deposition and reentrainment in charged aerosol flow - effects of particle charge and external electric field on the deposition layer

被引:30
|
作者
Adhiwidjaja, I [1 ]
Matsusaka, S [1 ]
Yabe, S [1 ]
Masuda, H [1 ]
机构
[1] Kyoto Univ, Dept Chem Engn, Sakyo Ku, Kyoto 6068501, Japan
关键词
particle deposition layer; reentrainment; corona charge; electric field;
D O I
10.1163/156855200750172330
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Formation of a particle deposition layer has been investigated as a simultaneous phenomenon of particle deposition and reentrainment in a turbulent aerosol flow. Aerosol particles passed through a corona charger were pneumatically transported into a glass tube equipped with a ring-type electrode. The deposition layers formed on the tube wall under various conditions were then quantitatively analyzed with particular attention to the effects of particle charge and external electric field on the deposition Layer. The charged particles formed a filmy deposition layer around the electrode independent of the polarity of the particle charge and applied voltage, The mass of the deposition layer increased with elapsed time and became constant after an equilibrium state of particle deposition and reentrainment had been achieved. The time dependence was represented by an exponential equation; the rime constant decreased with increasing particle charge and/or applied voltage, and the equilibrium mass of the deposition layer increased with particle charge. Furthermore, it was found that an appropriate arrangement of electrodes to control external electric field eliminates the filmy deposition layer.
引用
收藏
页码:221 / 233
页数:13
相关论文
共 50 条
  • [31] The Influence Of Flow Rates Through Nebulizers On Aerosol Particle Size And Dose Deposition In Aerosol Masks
    Dubosky, M. N.
    Brahmbhatt, H.
    Vines, D. L.
    AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 2014, 189
  • [32] No Evidence That Electric Charge Increases Inhaled Ultrafine Particle Deposition in Human Lungs
    Usmani, Omar S.
    Matthews, James C.
    Wright, Matthew D.
    Meah, Sally
    Underwood, S. Richard
    Barnes, Peter J.
    Shallcross, Dudley E.
    Biddiscombe, Martyn F.
    AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 2020, 201 (10) : 1301 - 1303
  • [33] No evidence electric charge increases inhaled ultrafine particle deposition in human lungs
    Biddiscombe, Martyn
    Matthews, James
    Wright, Matthew
    Meah, Sally
    Underwood, Richard
    Barnes, Peter
    Shallcross, Dudley
    Usmani, Omar
    EUROPEAN RESPIRATORY JOURNAL, 2020, 56
  • [34] Field measurements of aerosol particle dry deposition on tropical foliage at an urban site
    Kumar, R
    Kumari, KM
    Srivastava, SS
    ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (01) : 135 - 141
  • [35] Effects of external electric field on bubble and charged particle hydrodynamics in a gas-solid fluidized bed
    Sun, Jingyuan
    Wang, Jingdai
    Yang, Yongrong
    Zhu, Zichuan
    ADVANCED POWDER TECHNOLOGY, 2015, 26 (02) : 563 - 575
  • [36] Targeting aerosol deposition in patients with cystic fibrosis - Effects of alterations in particle size and inspiratory flow rate
    Laube, BL
    Jashnani, R
    Dalby, RN
    Zeitlin, PL
    CHEST, 2000, 118 (04) : 1069 - 1076
  • [37] Thermophoretic effects on nano-particle deposition in channel flow
    Reiyu Chein
    Wenyuan Liao
    Heat and Mass Transfer, 2005, 42 : 71 - 79
  • [38] Thermophoretic effects on nano-particle deposition in channel flow
    Chein, RY
    Liao, WY
    HEAT AND MASS TRANSFER, 2005, 42 (01) : 71 - 79
  • [39] TURBULENT DEPOSITION OF CHARGED-PARTICLES UNDER THE INFLUENCE OF AN EXTERNAL ELECTRIC-FIELD
    ORON, A
    GUTFINGER, C
    HASSID, S
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1988, 121 (02) : 531 - 542
  • [40] Compressibility and Rarefaction Effects on Particle Dynamics and Heat Transfer in Aerosol Deposition Process
    Farahani, Bahareh
    Jadidi, Mehdi
    Moghtadernejad, Sara
    COATINGS, 2022, 12 (10)