Stage-discharge estimation in compound open channels with composite roughness
نویسندگان
چکیده
منابع مشابه
Stage-Discharge Relationship in Open Channels
Rating curves relating stream discharge to water-surface stage are traditionally established empirically through many measurements of discharge and concurrent stage. However, discharge measurements typically scatter and do not show a unique relation to the stage because the underlying physics are usually not reflected in the rating. Examining the relationship of stage versus discharge in open c...
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Momentum transfer between the main channel and the side flood plains tends to increase the floodplain shear whereas the main channel shear decreases. The increase and decrease in shear are greatly influenced when a compound channel is with non-prismatic flood plains. In converging compound channels water flow on the floodplain crosses over water flow in the main channel, resulting in increased ...
متن کاملIdentification of Roughness in Compound Channels
An accurate estimation of roughness coefficients is of vital importance in any open channel flow study. In flood routing in natural rivers, most channels have compound sections and the roughness values in main channel and flood plains are usually different. In order to have more accurate results, the roughness of main channel and flood plains should be considered separately. It is possible to i...
متن کاملFlow Discharge Determination in Straight Compound Channels Using ANNs
Although many researchers have studied the flow hydraulics in compound channels, there are still many complicated problems in determination of their flow rating curves. Many different methods have been presented for these channels but extending them for all types of compound channels with different geometrical and hydraulic conditions is certainly difficult. In this study, by aid of nearly 400 ...
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ژورنال
عنوان ژورنال: Hydrology Research
سال: 2019
ISSN: 0029-1277,2224-7955
DOI: 10.2166/nh.2019.021