EVOLUTION OF PARTICLE SIZE DISTRIBUTION IN AIR IN THE RAINFALL PROCESS VIA THE MOMENT METHOD

被引：0
|
作者：
Gan, Fu-Jun [1 ]
Lin, Jian-Zhong [1 ,2 ]
机构：
[1] Zhejiang Univ, Dept Mech, Hangzhou 310003, Zhejiang, Peoples R China
[2] China Jiliang Univ, Hangzhou, Zhejiang, Peoples R China
来源：
THERMAL SCIENCE | 2012年 / 16卷 / 05期
基金：
中国国家自然科学基金;
关键词：
particles in air in the rainfall process; scavenging coefficient; distribution of particle; numerical simulation; AEROSOL; REMOVAL;
D O I：
10.2298/TSCI1205372G
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Population balance equation is converted to three moment equations to describe the dynamical behavior of particle size distribution in air in the rainfall. The scavenging coefficient is expressed as a polynomial function of the particle diameter, the raindrop diameter and the raindrop velocity. The evolutions of particle size distribution are simulated numerically and the effects of the raindrop size distribution on particle size distribution are studied. The results show that the raindrops with smaller geometric mean diameter and geometric standard deviation of size remove particles much more efficiently. The particles which fall in the "greenfield gap" are the most difficult to be scavenged from the air.
引用
收藏
页码：1372 / 1376
页数：5
相关论文
共 50 条
  • [31] DETERMINATION OF STRAIN DISTRIBUTIONS AND PARTICLE-SIZE COEFFICIENT BY MOMENT METHOD
    HARRISON, JW
    ACTA CRYSTALLOGRAPHICA, 1967, 23 : 175 - &
  • [32] Particle size distribution of PAHs in the ambient air of Southern Taiwan
    Chen, Shui-Jen
    Hwang, Ping-Shium
    Hsieh, Lien-Te
    Jian, Wei-Jain
    Liao, Shi-Hu
    Chiu, Shui-Chi
    Journal of Aerosol Science, 1997, 28 (SUPPL. 1)
  • [33] Online measurement of particle size distribution in alumina with Electrical Sensing Zone method in Bayer Process
    Cao, Hongjian
    Jiang, Yifeng
    Meng, Qian
    Pai, Junjun
    Wang, Xiaodong
    POWDER TECHNOLOGY, 2024, 436
  • [34] A quadrature-based moment method for the evolution of the joint size-velocity number density function of a particle population
    Heylmun, Jeffrey C.
    Fox, Rodney O.
    Passalacqua, Alberto
    COMPUTER PHYSICS COMMUNICATIONS, 2021, 267
  • [35] MINIEMULSION POLYMERIZATION OF STYRENE - EVOLUTION OF THE PARTICLE-SIZE DISTRIBUTION
    MILLER, CM
    SUDOL, ED
    SILEBI, CA
    ELAASSER, MS
    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1995, 33 (08) : 1391 - 1408
  • [36] ANALYSIS OF EVOLUTION OF PARTICLE SIZE DISTRIBUTION DURING MICROSTRUCTURAL CHANGE
    DEHOFF, RT
    METALLURGICAL TRANSACTIONS, 1971, 2 (02): : 521 - &
  • [37] The Evolution of Bimodal Size Distribution with Spatially Inhomogeneous Particle Concentration
    Xie, M. L.
    Kong, T. T.
    He, Q.
    CLEAN COAL TECHNOLOGY AND SUSTAINABLE DEVELOPMENT, 2016, : 417 - 421
  • [38] Formation of gemfibrozil with narrow particle size distribution via rapid expansion of supercritical solution process (RESS)
    Baseri, Hadi
    Lotfollahi, Mohammad Nader
    POWDER TECHNOLOGY, 2013, 235 : 677 - 684
  • [39] Characterization of the flocculation process from the evolution of particle size distributions
    Li, Xiao-yan
    Zhai, Xue-dong
    Chu, Hiu Ping
    Zhang, Jian-jun
    JOURNAL OF ENVIRONMENTAL ENGINEERING, 2008, 134 (05) : 369 - 375
  • [40] Particle size distribution of saprolites - a method dependent parameter
    Hafele, S
    Wiechmann, H
    ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE, 1997, 160 (04): : 349 - 355
12345