欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为研究明渠非恒定流输沙特性,本文建立了一套非恒定流流速、水深、流量及推移质输沙率测量系统，进行了9组恒定流输沙及3组非恒定流输沙试验,结果表明：恒定流条件下Einstein公式比Meyer-Peter公式具有更好的精度；非恒定流的推移质输沙强度与水流强度变化存在不同步的现象,长时间平均输沙率大于恒定流结果。
英文摘要：
Aiming at studying the characteristics of sediment transport in unsteady open channel flows, the surveying system has been established for measuring the velocity, water depth, discharge and the bed-load transport. Experiments have been conducted by using the established system of which nine runs are in steady uniform flows and the three runs in unsteady flows with movable channel beds. Experimental results indicate that the Einstein＇s equation proves to be better than the Meyer-Peter＇s equation; the long term average bed-load rate in unsteady flows is greater than that in equivalent steady flows ; and the change of bed-load transport intensity is not in phase with the change of flow intensity.
同期刊论文项目
同项目期刊论文
Fluvial processes and morphological response in the Yellow and Weihe Rivers to closure and operation
Nonlinear dynamics of nearshore irregular waves: a three-dimensional numerical model and its verific
An analysis of soil composition and mechanical properties of riverbanks in a braided reach of the Lo
Numerical simulation of longitudinal and lateral channel deformations in the braided reach of the Lo
Planar velocity distribution of viscous debris flow at Jiangjia Ravine, Yunnan, China: a field measu
Development of step-pool sequence and its effects in resistance and stream bed stability. Internatio
期刊信息
位置：