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Proceedings Paper

Simulation on the particle flow in laser airborne particle counting sensor
Author(s): Jiancheng Lai; Ting Zou; Chunyong Wang; Wei Yan; Yunjing Ji; Zhenhua Li
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Paper Abstract

Laser airborne particle counting sensor (LAPCS), based on light scattering of particle, is specially used in clean environment monitoring. LAPCS samples the air by a pump, and uses a laser illuminating the sampled air in the chamber, then counts the total number of scattering signal and its amplitude distribution, which can characterize the number of particles and size distribution. The structure of air-flow-path in LAPCS directly influences the flow of sampling air, the particle trajectories and velocity distribution in chamber that will influence the performance of LAPCS. In this paper, a finite element arithmetic based on Ansys Fluent14 software environment was developed to simulate the air flow and particle flow in LAPCS. Based on numerical calculations, velocity distribution of airflow and particle trajectories in chamber of LAPCS with different nozzles are presented intuitively. A few particles probably are disturbed outside the air-flow path and pass the photosensitive area many times, which can make the LAPCS iteration count. The results can provide a theoretical basis for optimizing design of the LAPCS.

Paper Details

Date Published: 11 November 2014
PDF: 10 pages
Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 927413 (11 November 2014); doi: 10.1117/12.2070241
Show Author Affiliations
Jiancheng Lai, Nanjing Univ. of Science and Technology (China)
Ting Zou, Nanjing Univ. of Science and Technology (China)
Chunyong Wang, Nanjing Univ. of Science and Technology (China)
Wei Yan, Nanjing Univ. of Science and Technology (China)
Yunjing Ji, Nanjing Univ. of Science and Technology (China)
Zhenhua Li, Nanjing Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 9274:
Advanced Sensor Systems and Applications VI
Tiegen Liu; Shibin Jiang; Niels Neumann, Editor(s)

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