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Diffusion of Sediment in Developing Flow
- Source :
- Journal of the Hydraulics Division. 96:109-123
- Publication Year :
- 1970
- Publisher :
- American Society of Civil Engineers (ASCE), 1970.
-
Abstract
- The suspension of sediment particles by turbulent eddy diffusion in a nonuniform flow region was studied, using the convective-diffusion equation as a mathematical model. A simplified form of the equation, for which mixing characteristics and flow velocities was assumed uniform, was found to accurately describe the sediment concentration profiles which had been measured in a 24-ft-long flume. Although diffusivities in the nonuniform region tended towards uniformity with downstream distance, the vertical diffusive transport rate was related to depth as a power law function. Measured diffusion coefficients were found to depend on the relative roughness of the mobile bed.
Details
- ISSN :
- 26902524 and 0044796X
- Volume :
- 96
- Database :
- OpenAIRE
- Journal :
- Journal of the Hydraulics Division
- Accession number :
- edsair.doi...........516b509e9fe9c295c27ce19bf589f985