DOI: 10.1016/j.atmosenv.2015.05.053
Scopus记录号: 2-s2.0-84930663665
论文题名: Behavior of hydrophobic micron particles impacting on dropletsurface
作者: Wang A ; , Song Q ; , Yao Q
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 115 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Attachment efficiency
; Droplet
; Particulate matter
; Surface tension
Scopus关键词: Drops
; Hydrophobicity
; Particle size
; Pollution control
; Surface tension
; Velocity
; Airborne particle
; Attachment efficiency
; Critical velocities
; Industrial pollution
; Particle diameters
; Particulate Matter
; Rebound velocity
; Surface tension coefficient
; Velocity distribution
; atmospheric pollution
; droplet
; hydrophobicity
; industrial emission
; particle size
; particulate matter
; pollution control
; surface tension
; airborne particle
; Article
; atmosphere
; behavioral science
; contact angle
; energy conversion
; hydrophobicity
; material state
; oscillation
; particle size
; particulate matter
; pollution control
; priority journal
; surface property
; surface tension
; velocity
; wet deposition
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The impact behavior of airborne particles directly affects their capture by droplets in the atmosphere and industrial pollution control processes. This process was simulated by a dynamic model and analyzed for hydrophobic micron particles. Based on the analysis of energy conversion, the criteria were developed and verified by dynamic simulation to ascertain three impaction modes by the submergence/rebound critical velocity (US/R ) and the rebound/oscillation critical velocity (UR/O ). The criteria indicated that surface tension coefficient, contact angle, and particle diameter are the key parameters to affect the critical velocities, between which exists the rebound velocity range. As the surface tension coefficient and the advancing angle increased, US/R and UR/O increased, the rebound velocity range widened. As the receding angle increased, US/R remained unchanged, while UR/O decreased, the rebound velocity range widened. As the particle size increased, US/R and UR/O decreased, the rebound velocity range narrowed. The values of the above-mentioned key parameters considered in the simulation covered the usual parameter ranges of the wet deposition or wet scrubbing process. The simulation results showed the non-negligible possibility of particle rebound in such processes. The attachment efficiency of airborne particles can be determined by the proposed criteria combined with the incidence velocity distribution. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81682
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing, China
Recommended Citation:
Wang A,, Song Q,, Yao Q. Behavior of hydrophobic micron particles impacting on dropletsurface[J]. Atmospheric Environment,2015-01-01,115