CLC number: TV142;P343.1
On-line Access:
Received: 2001-12-27
Revision Accepted: 2002-05-09
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SUN Zhi-lin, SUN Zhi-feng, DONAHUE John. Equilibrium bed-concentration of nonuniform sediment[J]. Journal of Zhejiang University Science A, 2003, 4(2): 186-194.
@article{title="Equilibrium bed-concentration of nonuniform sediment",
author="SUN Zhi-lin, SUN Zhi-feng, DONAHUE John",
journal="Journal of Zhejiang University Science A",
volume="4",
number="2",
pages="186-194",
year="2003",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2003.0186"
}
%0 Journal Article
%T Equilibrium bed-concentration of nonuniform sediment
%A SUN Zhi-lin
%A SUN Zhi-feng
%A DONAHUE John
%J Journal of Zhejiang University SCIENCE A
%V 4
%N 2
%P 186-194
%@ 1869-1951
%D 2003
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2003.0186
TY - JOUR
T1 - Equilibrium bed-concentration of nonuniform sediment
A1 - SUN Zhi-lin
A1 - SUN Zhi-feng
A1 - DONAHUE John
J0 - Journal of Zhejiang University Science A
VL - 4
IS - 2
SP - 186
EP - 194
%@ 1869-1951
Y1 - 2003
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2003.0186
Abstract: Knowledge of the equilibrium bed-concentration is vital to mathematical modeling of the river-bed deformation associated with suspended load but previous investigations only dealt with the reference concentration of uniform sediment because of difficulties in observation of the bed-concentration. This work is a first attempt to develop a theoretical formula for the equilibrium bed-concentration of any fraction of nonuniform sediment defined at the bed-surface. The formula is based on a stochastic-mechanistic model for the exchange of nonuniform sediment near the bed, and described as a function of incipient motion probability, non-ceasing probability, pick-up probability, and the ratio of the average single-step continuous motion time to static time. Comparison of bed-concentration calculated from the proposed formula with the measured data showed satisfactory agreement, indicating the present formula can be used for solving the differential equation governing the motion of suspended load.
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Open peer comments: Debate/Discuss/Question/Opinion
<1>
Chengchen@HHU<tookysky@163.com>
2010-09-21 16:23:11
I come from Hohai University. I am studying on non-equilibrium sediment transport