At high water stages, obstacles (submerged and particularly emerged vegetation) in the flood plains of a river contribute to the flow resistance and hamper the conveyance capacity. In particular the elevated vegetated parts are expected to play an important role. The objective of this research work is to determine the form drag due to vegetated oblique weir-like obstacles. Experiments have been...

Sedimentation upstream of a weir is common phenomenon, especially for river with high sedimentation. In the long term, this can lead to problems since discharge capacity will decrease due rise riverbed, as experienced in Bekasi Weir, West Java, Indonesia. The accumulated sediments increased up 1.5 m from its original riverbed decade. One easiest ways overcome issue return elevation actual by ma...

Open-ditch controlled drainage is an important water management measure used to reduce drought and waterlogging stress in many areas the world. Such measures are essential promote crop yield, make full use of rainfall resources, regional discharge (Q) environmental pollution. To quantify its effects, open-ditch yield simulation model was developed area located Northern Huaihe River Plain (NHRP)...

An analytical solution is presented for the nonlinear pressure-flow relationship of deformable passive valves, which are formed by bonding a deformable film over etched channels separated by a weir. A fluidic pathway connecting the channels is opened when the upstream pressure creates a tunnel along a predefined narrow strip where the film is not bonded to the weir. When the width of the strip ...

abstract disc infiltrometer is one of those devices that used in recent years in measurement of hydraulic conductivity of entire soil. in order to analyze the data taken by disc infiltrometer a variety of methods based on wooding’s base analyze have been introduced. the objective of this study was to compare the performances of ankeny and weir methods for predicting soil hydraulic properties us...