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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Sediment management and morphodynamics : Evaluation of correlation of dimensionless sediment transport parameters with sediment transport rat...
Evaluation of correlation of dimensionless sediment transport parameters with sediment transport rate for various data sets
Author : V.G. YADAV1, DR. S. M. YADAV2, S. I. WAIKHOM3
ABSTRACT
Sediment transport is one of the most dynamic and consistent phenomenon of open channel flow. Water, under various
flow conditions, carries different quantity and quality of sediments over great distances. Immense quantities of sediment
of various sizes, shapes and density move across the flow terrain. Most sediment load transport relationships are either
based on calculating separately the suspended load and bed load and adding them to find total load (indirect methods)
or finding total load treating mode of whole sediment movement as one phenomenon. Most engineering applications call
for finding total load, which the practicing engineers resort to, while designing a hydraulic structure. Recent research has
explored the connection between sediment transport and various dimensionless parameters. Duan Jeniffer G has
proposed a simple total load formula based on this concept. Duan has correlated various dimensionless parameters
proposed by other researchers like Van Rijn, Yang, etc with sediment transport rate. Also Duan proposed a
dimensionless parameter ϕd, incorporating both shear stress and fall velocity and correlated it with sediment transport
rate. Duan performed analysis based on huge data sets and experimental results and found that dimensionless
parameter, ϕd has very high correlation and thus predicts sediment transport rate better than other dimensionless
parameters. Present paper submits the analysis carried out in the similar way for various data sets like Samaga et al,
Soni J P, etc. to simulate the outcome of Duan. However, authors found mixed result and ϕd was found to be best
prediction parameter (correlation about 0.9) only in 50 percent cases with other dimensionless parameters having
considerably good correlation too (0.8).The analysis gives high correlation with ϕd for M1 and M4 data of Samaga et al.
For data set of Soni J P the next best correlation is obtained for ϕb (BagnoldĄ¯s power parameter, 1966).
File Size : 351,524 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Sediment management and morphodynamics
Date Published : 27/08/2015
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