کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4453429 | 1312163 | 2006 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The effects of non-continuum hydrodynamics on the Brownian coagulation of aerosol particles The effects of non-continuum hydrodynamics on the Brownian coagulation of aerosol particles](/preview/png/4453429.png)
Most theoretical predictions of the rate of Brownian-induced coagulation have considered the continuum hydrodynamic resistance of the suspending gas or liquid as well as van der Waals and/or electrostatic forces. However, the mean-free path of the gas is comparable with the length scale at which van der Waals forces become important during the collision of two Brownian aerosol particles. We predict the initial rate of coagulation in a monodisperse aerosol driven by Brownian motion in the presence of van der Waals forces and non-continuum lubrication forces when the Knudsen number (ratio of the mean-free path to the particle radius) is small but non-zero. A comparison with experiments demonstrates the accuracy of the predictions and the importance of accounting for non-continuum effects to provide quantitative predictions of coagulation rates.
Journal: Journal of Aerosol Science - Volume 37, Issue 4, April 2006, Pages 471–482