Cunningham correction factor
From Wikipedia, the free encyclopedia
The Cunningham Slip Correction is a correction to the friction factor between the continuum and free molecular regime.
Cunningham derived the correction factor in 1910 and verified with Millikan the correction in the same year.
- C = 1 + l / d * (A1 + A2 * exp( − A3 * d / l))
where
- C is the correction factor
- l is the mean free path
- d is the particle size
- An are experimentally determined coefficients.
- For air (Davies, 1945):
- A1 = 1.257
- A2 = 0.400
- A3 = 0.55
 |
This classical mechanics-related article is a stub. You can help Wikipedia by expanding it. |
