The Effect of Entrance Edges Shape of the Diversion Channel on the Dividing Streamlines Behavior at the Junction Region

Abdalhafedh, Ahmed Yahya; Alomari, Nashwan K.

doi:10.33899/rengj.2021.130181.1096

Cited by 2 publications

(1 citation statement)

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“…Abdalhafedh and Alomari [56] studied the effect of separating streamline behavior when the sharp edge of the diversion channel entry was changed to a circular edge (either upstream, downstream, or on both sides). The study accounted for a range of circular edge diameters (7.5% to 30% of total discharge) across five distinct diversion discharge ratios.…”

Section: Experimental Modellingmentioning

confidence: 99%

A Review of Studying the Flow Characteristics in Branching Open Channels

Alfatlawi,

Hussein

2024

IJHT

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The drinking water supply, as well as other water-related uses for humans, begins with extracting the "raw" water from different sources. Many plants treat the water by directly flowing raw water from the water resources to the nearby plants of the treated water through the side channels. Open channels in drainage and irrigation projects are the main water transport method. For more situations, channels had to branch into more secondary channels though they could provide ancillary items such as water and irrigation to municipal utilities and hydroelectric schemes. Many experimental and theoretical investigations of the branch open channels have been implemented to recognize the flow into their characteristics and convert them into a natural case of practical and theoretical investigations. This study's primary targets are reviewing the effect of physical features and models of branch channels by checking relevant kinds of literature. The flow quantity to branching channels is affected by many factors (angle of diversion, discharge of the main channel, slope of the bed leading to both the main and the branch channel etc.). The branch channel experiences a reduction in its velocity, momentum, and Froude number due to an increase in the upstream discharge of the main channel. It rises with increasing water depth upstream in the branch and the main channel bed width. Since diverting water flow to a branch channel reduces the downstream water depth in the main channel, the main channel's water depth is often greater than the branch channel's. This review concerns the boundary condition and angle diversion of branch channels to the vital case investigation, so as to the recirculation zone occurs at upstream branch channel decreasing with decreasing the diversion angle.

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Section: Experimental Modellingmentioning

confidence: 99%

A Review of Studying the Flow Characteristics in Branching Open Channels

Alfatlawi,

Hussein

2024

IJHT

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A numerical study of diversion flow to determine the optimum flow system in open channels

Alfatlawi,

Hussein

2024

Water Practice &Amp; Technology

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The term ‘branching flow’ describes water extraction from streams or main channels via secondary lateral channels. Through using 3D model simulation, the aims to identify the ideal angle of diversion based on the maximum flow rate to the branching channel and the minimum zone of separation size attained at the entrance channel for the eight grades (900, 750, 600, 450, 300, 250, 200, and 150). An experimental study has previously been confirmed, and this paper provides a comprehensive implementation of the numerical solution (finite volume) using Flow 3D version 11.0.4 software. The validation study was conducted at the Babylon University/College of Engineering /Laboratory of the fluid. The study presented results for many different flow discharge ratios depending on two inflow discharges (12.5 and 18.5 L/s). The comparison between the numerical model and the experimental results revealed statistically a good agreement. The final results demonstrated that a diversion angle of 250 had the most significant optimum angle with the maximum discharge ratio, a minimum separation zone size, and minimum energy losses. Furthermore, the flow rate peaks in the bifurcating channel (5.76 and 8.11 L/s), which accounts for roughly 46.06 and 43.83%, respectively, from the main channel flow.

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The Effect of Entrance Edges Shape of the Diversion Channel on the Dividing Streamlines Behavior at the Junction Region

Cited by 2 publications

References 0 publications

A Review of Studying the Flow Characteristics in Branching Open Channels

A Review of Studying the Flow Characteristics in Branching Open Channels

A numerical study of diversion flow to determine the optimum flow system in open channels

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