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- W2370389059 abstract "The process of bed-load movement on the non-uniform gravel bed under the condition of steady flow is studied in prototype-scale laboratory channel. The study includes the investigation on the variation of sediment transport rate for different sampling with high accuracy and long-time series, and analysis on the dependence of statistical variation of sediment transport rate on sampling time. The measured bed-load sediment transport rate exhibits significant stochastic features. The shorter the sampling time is, the more intensive the stochastic features will be. With a flow discharge of 4 300L/s, and sampling interval 2min, 5min and 10min, the corresponding fluctuation is about 4.8 times, 3.3 times, and 1.7 times more than the average fluctuation. With a discharge of 5 501L/s, and sampling interval 2min, 5min and 10min, the corresponding fluctuation is about 3.2 times, 2.1 times, and 1.9 times more than the average fluctuation. The dispersion coefficient, the dimensionless turbulence intensity, and the dimensionless ultimate difference of gravel bed-load transport rate per unit width, all decrease with the increase of sampling time and dimensionless shear stress. Using the experiment results, the correlative expression obtained by multiple linear regression based on experimental data can provide reliable basis for engineering application." @default.
- W2370389059 created "2016-06-24" @default.
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- W2370389059 date "2012-01-01" @default.
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- W2370389059 title "Study on stochastic features of nonuniform gravel bed-load transport" @default.
- W2370389059 hasPublicationYear "2012" @default.
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