Title :
Influence of Soot Agglomerate Morphology on Radiative Properties in Concentration Detection
Author :
Jinying Yin ; Hongyan Yang ; Siqi Zhang ; Yong Qin ; Zhen Zhou
Author_Institution :
Sch. of Meas. & Commun. Eng., Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
Solar radiation is strongly absorbed by soot aggregate. And the atmospheric radiative properties will be affected by the change of aggregate morphology. Based on fractal theory, the morphological properties of soot aggregates are studied using the cluster-cluster aggregation (CCA) model. The superposition T matrix method is employed to perform extensive computations of extinction, absorption and scattering properties of soot aggregates with varying state of compactness and size. The relationship between the morphology and radiative properties of aggregates is discussed. Firstly, the radiative properties of different size and different morphology of aggregates are analyzed with the change of the volume fraction. Then, the absorption, scattering and extinction cross-sections of a fixed morphology aggregate are analyzed with changing particle size. Finally, an essential data for detecting soot aerosol concentration can be provided by the value of absorption cross-section of our results.
Keywords :
absorption; aerosols; air quality; atmospheric radiation; fractals; particle size; scattering; solar radiation; soot; CCA model; absorption cross-section value; aggregate morphology change; aggregate radiative property; atmospheric radiative property; changing particle size; cluster-cluster aggregation model; compactness state; concentration detection radiative property; extensive extinction computation; fixed morphology aggregate absorption; fixed morphology aggregate extinction cross-section; fixed morphology aggregate scattering; fractal theory; size state; solar radiation; soot aerosol concentration detection; soot aggregate absorption; soot aggregate absorption property; soot aggregate morphological property; soot aggregate morphology influence; soot aggregate scattering property; superposition T matrix method; volume fraction change; Absorption; Aerosols; Aggregates; Fractals; Manganese; Morphology; Scattering; CCA model; T matrix; radiative property; soot aggregates;
Conference_Titel :
Instrumentation and Measurement, Computer, Communication and Control (IMCCC), 2014 Fourth International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-6574-8
DOI :
10.1109/IMCCC.2014.158
