Methods of computation of suspended load from bed materials and flow parameters
Article first published online: 14 JUN 2006
Volume 28, Issue 6, pages 781–791, December 1981
How to Cite
GHOSH, J. K., MAZUMDER, B. S. and SENGUPTA, S. (1981), Methods of computation of suspended load from bed materials and flow parameters. Sedimentology, 28: 781–791. doi: 10.1111/j.1365-3091.1981.tb01942.x
- Issue published online: 14 JUN 2006
- Article first published online: 14 JUN 2006
- (Manuscript received 10 October 1980; revision received 3 January 1981)
Computation of the grain-size distribution of the suspended load above a sand bed must take into consideration: (1) sorting processes from the bed to the bed layer and (2) sorting between the bed layer and suspension. Grain-size distributions of the bed layers above sand beds of three different types have been computed in this work, both by the Einstein and the Gessler methods. Using these as references, suspended load distributions have been obtained in each case by the Rouse suspension equation. A new formula has also been developed in partial modification of Hunt's method for direct computation of bed load and suspended load from a bed's grain-size distribution and flow parameters.
Comparison of the computed data with actual observations in laboratory flumes show that no one method is particularly superior to the others, but the present method is advantageous because it affords direct computation of the suspended load from a bed's grain-size distribution, without going through an intermediate stage (bed load). The possible sources of error in each of the methods have been discussed.