Critical tractive stress of nonuniform sediments
- 8 January 1999
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Hydraulic Research
- Vol. 37 (1), 39-58
- https://doi.org/10.1080/00221689909498531
Abstract
Experiments on initiation of motion and rate of bed load transport of different fractions in case of nonuniform sediments are reported. Analysis of these data as well as those from earlier studies by other investigators has shown some limitations of the available relationships for critical tractive stress (CTS) of sediment mixtures. Further analysis of the data has resulted in a new relationship for CTS in terms of the size of the particular fraction in question (di ), the geometric mean size (dg ) and the geometric standard deviation (σ g ) of the mixture. An empirical relationship has been obtained for the critical tractive stress of the size d σ defined as dg σg.This publication has 12 references indexed in Scilit:
- Fractionwise calculation of bed load transportJournal of Hydraulic Research, 1996
- Incipient Motion of Sand‐Gravel Sediment MixturesJournal of Hydraulic Engineering, 1993
- Critical Shear Stress of Natural SedimentsJournal of Hydraulic Engineering, 1993
- A model for the entrainment and transport of sediment grains of mixed sizes, shapes, and densitiesWater Resources Research, 1992
- Experimental study of incipient motion in mixed‐size sedimentWater Resources Research, 1988
- Methods for estimating the critical shear stress of individual fractions in mixed‐size sedimentWater Resources Research, 1988
- Calculations of the critical shear stress for motion of uniform and heterogeneous sedimentsWater Resources Research, 1987
- Bed Load Transport of Sediment MixturesJournal of Hydraulic Engineering, 1986
- On why gravel bed streams are pavedWater Resources Research, 1982
- Threshold of sediment motion under unidirectional currentsSedimentology, 1977