Particle Suspension in a Rotating Drum Chamber When the Influence of Gravity and Rotation are Both Significant
| Autor: | O. R. Moss, B. Asgharian |
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| Rok vydání: | 1992 |
| Předmět: | |
| Zdroj: | Aerosol Science and Technology. 17:263-277 |
| ISSN: | 1521-7388 0278-6826 |
| DOI: | 10.1080/02786829208959575 |
| Popis: | In recent years, rotating chambers have been found to be an effective method of retaining particles suspended in the air for an extended period of time. Rotating drum chambers have the potential of providing a stable atmosphere of well-characterized inhalable particles for periods lasting from hours to days for use in inhalation toxicology studies. To aid in planning for the use of rotating drum chambers in inhalation studies, we created a model that describes (a) the concentration of particles in the chamber under various conditions and (b) the particle sizes for which gravity and rotation influence particle dynamics. Previous publications describe the suspension / deposition of particles when the rotational effect is dominant, but do not describe particle suspension / deposition when gravitational settling is significant as occurs when such drum chambers are operated at optimal conditions for retaining the highest fraction of particles over time. By using the limiting trajectory of particles, the fracti... |
| Databáze: | OpenAIRE |
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