Error Estimate in Einstein's Suspended Sediment Load Method
Publication: Journal of Hydraulic Engineering
Volume 122, Issue 5
Abstract
Computation of suspended sediment load in open channels relies on the integration of the product of the suspended sediment concentrations and the fluid velocity profile. Sediment in the flow, however, travels at a lower velocity than the fluid. Errors due to the relative velocity between sediment particles and fluid are evaluated based on experimental data. The procedure for calculating the errors in Einstein's method does not involve calculating the actual suspended load; instead, it relies on determining the relative error between the loads by using both the fluid velocity profile and the sediment velocity profile. Although there is an abundance of data on the velocity profiles in open channel flows, with and without sediment in the flow, data on sediment velocity profiles is scarce. The analysis of the available data indicates that Einstein's method for computing the suspended sediment load overestimates the load by about 40, in some cases. Further data collection and subsequent analysis is needed to more accurately formulate the difference in sediment loads based on Einstein's method.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 122 • Issue 5 • May 1996
Pages: 282 - 285
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: May 1, 1996
Published in print: May 1996
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