A study on particle size distribution measuring method for floating particles in the upward air flow with its velocity equal to their terminal velocity

Author

Sugita, Takayuki ; Kitayama, Yoshifumi ; Umayahara, Hiromitsu

Author_Institution

Hiroshima Sanyo High Sch., Japan

fYear

2001

fDate

2001

Firstpage

365

Lastpage

369

Abstract

We have examined the particle size measuring method in which flour particles are floated into the airflow at a test section with its upward velocity equal to their terminal velocity. As a result, it was verified that the terminal velocity was experimentally related to the size of floating particle, and that it made possible to obtain spherically equivalent diameter of the floating particle by an elliptical approximation of the image. We further applied this floating method to measure particle size distribution as a simpler way in which the floating particles were counted in number according to the various upward velocities

Keywords

CCD image sensors; particle size measurement; CCD camera; elliptical approximation; floating particles; flour particles; particle size distribution; terminal velocity; upward air flow; Charge coupled devices; Charge-coupled image sensors; Electronic equipment testing; Ellipsoids; Particle measurements; Photonics; Shape measurement; Size measurement; Systems engineering and theory; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE 2001. Proceedings of the 40th SICE Annual Conference. International Session Papers

Conference_Location

Nagoya

Print_ISBN

0-7803-7306-5

Type

conf

DOI

10.1109/SICE.2001.977863

Filename

977863