Open AccessForward research on transmission characteristics of near-surface particulate-matter-polluted atmosphere in mining area combined with CFD method
Author(s) -
Wenzheng Wang,
Yanming Wang,
Guoqing Shi
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.0a1010
Subject(s) - particulates , atmosphere (unit) , radiative transfer , mie scattering , computational fluid dynamics , environmental science , wind speed , aerosol , large eddy simulation , atmospheric model , transmission (telecommunications) , atmospheric sciences , meteorology , scattering , optics , light scattering , mechanics , geology , physics , turbulence , chemistry , organic chemistry , electrical engineering , engineering
The optical radiation and radiation transfer characteristics of atmospheric particulate matter (PM) in mining area of northwest China were simulated and analyzed in this paper. Computational fluid dynamics (CFD) method was adopted to simulate the distribution of PM considering the local desertification and mining activities. The 1-D radiative transfer equation was solved using discrete ordinates method combined with Mie scattering model based on the CFD simulation results. The spectral aerosol optical depth and transmission characteristics of PM polluted atmosphere in the wavelength of 1-25μm under different intensity of dust releases, wind speeds and dust compositions were obtained and analyzed. The simulation results show that: the transmission characteristics are obviously enhanced with the increase of wind speed and sand particles' proportion but greatly decreased with the increase of the intensity of dust release.