| Main Title |
Theoretical Model of Soiling of Surfaces by Airborne Particles. |
| Author |
Haynie, F. H. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Year Published |
1985 |
| Report Number |
EPA/600/D-85/279; |
| Stock Number |
PB86-130036 |
| Additional Subjects |
Mathematical models ;
Surface properties ;
Air pollution ;
Particles ;
Degradation ;
Texture ;
Diffusion ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-130036 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
24p |
| Abstract |
A model is developed which can be used to predict the change in reflectance from a surface as a function of time. Reflectance change is a measure of soiling caused by the deposition of particles on a surface. The major inputs to the model are the parameters to a bimodal distribution of ambient particle concentration, surface roughness, friction velocity, particle and substrate reflectance, and whether the surface is vertical or horizontal. A new model for deposition velocity was developed for rough surfaces using Reynold's number - friction factor data and available particle deposition data. The model is used to demonstrate the effects of changing input parameters on rates of soiling of surfaces. |
| PUB Date Free Form |
Nov 85 |
| Category Codes |
13B; 68A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
605823966 |
| Origin |
NTIS |
| Type |
CAT |
