Analysis on the Process of Washload Transport on the Hinuma River
نویسندگان
چکیده
The authors conducted a set of survey on wash load transportation at the two sites in the Hinuma River, during a fl ood on June 19th ,1997, and found out a decrease in wash load concentration between the upper site(46.0km) and the lower site(28.1km). A numerical simulation was carried out to investigate causes of the decrease. CIP scheme was introduced to solve the unsteady advection-diffusion equation in the model of wash load transportation model. Results of the simulation show that the advection dominated and the diffusion did not in the process of the wash load transportation, and lateral outflow of wash load, which was caused by the trapping of vegetation, was one of the causes of the decrease in wash load concentration.
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