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http://dx.doi.org/10.12989/ose.2012.2.4.289

Enhanced vertical diffusion coefficient at upper layer of suspended sediment concentration profile  

Kim, Hyoseob (Civil and Environmental Engineering, Kookmin University)
Jang, Changhwan (Construction Technology Examination Division, Korean Intellectual Property Office)
Lhm, Namjae (Hyosung Ebara Engineering)
Publication Information
Ocean Systems Engineering / v.2, no.4, 2012 , pp. 289-295 More about this Journal
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.
Keywords
vertical diffusion coefficient; suspended sediment concentration profile; sediment mixing coefficient; fluid mixing coefficient;
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Times Cited By KSCI : 1  (Citation Analysis)
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