Experimental study of the interaction of hydraulic jumps caused by an inclined jet and a vertical jet

Authors

1 department faculty univercity of birjand.irand

2 Assoc. Prof., Mechanical Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

Abstract

In the present work, investigates the effect of hydraulic jump interaction between an inclined nozzle and a vertical nozzle experimentally. Water is used as the test fluid, and the flow is in the laminar range. First, the results of the experimental setup used in this study were validated with the results of an inclined nozzle and two vertical jets. Previous studies have shown that there are boundaries (far, distance, and near regions) in the interaction of two vertical jets, which change with an increase or decrease in flow rate and distance between the nozzles. The results of this study show that in the interaction of hydraulic jumps from an inclined and a vertical nozzle, the boundary between the far and distance regions increases linearly by about 20% with an increase in inclination angle. Additionally, with a fix distance between the nozzles, the ratio of the jump radius of the vertical jet at 0 degree to 180 degree (〖R1〗_π/〖R1〗_o) increases with an increase in inclination angle, but this ratio decreases for the inclined nozzle (〖R2〗_π/〖R2〗_o). These ratios increase linearly with an increase in flow rate. Moreover, at a constant flow rate, the ratio 〖R1〗_π/〖R1〗_o decreases with an increase in inclination angle, and this ratio approaches 1, as the nozzles move away from each other. This trend is vice versa for the inclined nozzle.

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References

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Journal of Solid and Fluid Mechanics
Volume 14, Issue 1
March and April 2024
Pages 17-28

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