|
Ocean Systems Engineering Volume 2, Number 4, December 2012 , pages 289-295 DOI: https://doi.org/10.12989/ose.2012.2.4.289 |
||
|
Enhanced vertical diffusion coefficient at upper layer of suspended sediment concentration profile |
||
Hyoseob Kim, Changhwan Jang and Namjae lhm
|
||
| Abstract | ||
| Assume fluid eddy viscosity in the vertical direction is parabolic. Sediment particles diffuse with the given fluid eddy viscosity. However, when the vertical diffusion coefficient profile is computed from the suspended sediment concentration profile, the coefficient shows lager values than the fluid mixing coefficient values. This trend was explained by using two sizes of sediment particles. When fine sediment particles like wash load are added in water column the sediment mixing coefficient looks much larger than the fluid mixing coefficient. | ||
| Key Words | ||
| vertical diffusion coefficient; suspended sediment concentration profile; sediment mixing coefficient; fluid mixing coefficient | ||
| Address | ||
| Hyoseob Kim : Civil and Environmental Engineering, Kookmin University, Sungbuk-gu, Seoul 136-702, Korea Changhwan Jang : Construction Technology Examination Division, Korea Intellectual Property Office, Seo-gu, Daejeon 302- 701, Korea Namjae lhm : Hyosung Ebara Engineering, Seocho-gu, Seoul 137-060, Korea | ||
