The Mobility and Structure of Aerosol Agglomerates
Abstract
The relation between the aerosol agglomerate structure and transition regime mobility can be explained with a simple model incorporating fractal geometry and results from computer simulations. The model is consistent with previous measurements of the shape factors and allows some structural information to be inferred from these measurements, although the data are insufficient for a rigorous comparison between theory and experiment. Experiments conducted here with well-characterized TiO_2 and Si agglomerates support the model' assumption that the mobility diameter of a particle in the free-molecule regime is determined solely by the projected area of the particle. The correlation between the projected area and the mobility equivalent size remains remarkably good throughout the transition regime for the agglomerate particles studied here. The model predicts this result for particles with fractal dimensions of approximately D_f = 2
Additional Information
© 1993 American Association for Aerosol Research. Received 5 May 1991; accepted July 10, 1992. This research was supported by the International Fine Particle Research Institute and by the U.S. Department of Energy under grant DE-FG22-90PC90286.Additional details
- Eprint ID
- 59231
- Resolver ID
- CaltechAUTHORS:20150805-112413439
- International Fine Particle Research Institute
- DE-FG22-90PC90286
- Department of Energy (DOE)
- Created
-
2015-12-09Created from EPrint's datestamp field
- Updated
-
2023-04-19Created from EPrint's last_modified field