Retrieval of spheroid particle size distribution from spectral extinction data in the independent mode using PCA approach

2013 ◽  
Vol 115 ◽  
pp. 78-92 ◽  
Author(s):  
Hong Tang ◽  
Jian-Zhong Lin
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Extinction Data ◽  
Spheroid Particle ◽  
Independent Mode

scholarly journals Retrieval of spherical particle size distribution with an improved Tikhonov iteration method

2012 ◽  
Vol 16 (5) ◽  
pp. 1400-1404 ◽  
Author(s):  
Hong Tang
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Spherical Particle ◽  
Iteration Method ◽  
Initial Distribution ◽  
Light Extinction ◽  
Simulation Experiments ◽  
The Given ◽  
Independent Mode

The problem of retrieval for spherical particle size distribution in the independent mode is studied, and an improved Tikhonov iteration method is proposed. In this method, the particle size distribution is retrieved from the light extinction data through the Phillips-Twomey method firstly in the independent mode, and then the obtained inversion results of the particle size distribution is used as the initial distribution and the final retrieved particle size distribution is obtained. Simulation experiments indicate that the spherical particle size distributions obtained with the proposed method coincide fairly well with the given distributions.

scholarly journals Inversion of spheroid particle size distribution in wider size range and aspect ratio range

2013 ◽  
Vol 17 (5) ◽  
pp. 1395-1402 ◽  
Author(s):  
Hong Tang
Keyword(s):  
Particle Size ◽  
Aspect Ratio ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Size Range ◽  
Light Extinction ◽  
Particle Sizing ◽  
Relationship Of ◽  
Spheroid Particle ◽  
Ratio Range

The non-spherical particle sizing is very important in the aerosol science, and it can be determined by the light extinction measurement. This paper studies the effect of relationship of the size range and aspect ratio range on the inversion of spheroid particle size distribution by the dependent mode algorithm. The T matrix method and the geometric optics approximation method are used to calculate the extinction efficiency of the spheroids with different size range and aspect ratio range, and the inversion of spheroid particle size distribution in these different ranges is conducted. Numerical simulation indicates that a fairly reasonable representation of the spheroid particle size distribution can be obtained when the size range and aspect ratio range are suitably chosen.

Effects of Particle Size Distribution on Corrosion Rate of Carbon Steel in Soil

2020 ◽  
Vol 69 (4) ◽  
pp. 102-106
Author(s):  
Shota Ohki ◽  
Shingo Mineta ◽  
Mamoru Mizunuma ◽  
Soichi Oka ◽  
Masayuki Tsuda
Keyword(s):  
Particle Size ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Particle Size Distribution ◽  
Size Distribution
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