Performance evaluation of an API Aerosizer TM

A numerical method was developed to simulate the compressible flow field and particle trajectory in an API Aerosizer TM. Experimental particle time-of-flights (τ TOF) data using monodisperse solid and liquid particles were also obtained. Theoretical particle τ TOF results were compared with the pres...

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Bibliographic Details
Published inJournal of aerosol science Vol. 29; no. 7; pp. 839 - 853
Main Authors Tsai, Chuen Jinn, Chein, Hung Min, Chang, Shu Ting, Kuo, Jong Yoh
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1998
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Summary:A numerical method was developed to simulate the compressible flow field and particle trajectory in an API Aerosizer TM. Experimental particle time-of-flights (τ TOF) data using monodisperse solid and liquid particles were also obtained. Theoretical particle τ TOF results were compared with the present experimental data and those of Cheng et al. (1993, J. Aerosol Sci. 26, 501–514). Good agreement was found for solid particles. The original τ TOF calibration for the API Aerosizer TM was found to underestimate measured τ TOF mainly because of the assumption of one-dimensional flow in the nozzle, and incorrect use of the particle drag coefficient in the supersonic flow field. Effects of decreasing ambient pressure and increasing particle density on increasing τ TOF were found to be important.
ISSN:0021-8502
1879-1964
DOI:10.1016/S0021-8502(97)00433-3