| Environmental & Chemical Engineering |
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| Vertical distribution of sediment concentration |
| Sai-hua HUANG, Zhi-lin SUN, Dan XU, Shan-shan XIA |
| Department of Hydraulic and Ocean Engineering, Zhejiang University, Hangzhou 310058, China |
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Abstract A simple formula is proposed to predict the vertical distribution of a suspended load concentration in a 2D steady turbulent flow. The proposed formula significantly improves the well-known Rouse formula where sediment concentration has an infinitely large value at the channel bottom and a zero value at the water surface. Based on this formula and the logarithmic velocity profile, a theoretical elementary function for the transport rate of a suspended load is developed. This equation improves the Einstein equation in which the unit-width suspended sediment discharge must be solved by numerical integration and a contradiction between the lower limit of the integral and that of velocity distribution exists.
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Received: 07 December 2007
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