Paper Title :Investigating The Effect of Stepped Conduit and Vortex Blades In Dimensions on the Hydraulics of the Current Passing Over the Short-Throated Shaft Spillway
Author :Firooznia.Dariush, Aghamajidi.Roozbeh
Article Citation :Firooznia.Dariush ,Aghamajidi.Roozbeh ,
(2024 ) " Investigating The Effect of Stepped Conduit and Vortex Blades In Dimensions on the Hydraulics of the Current Passing Over the Short-Throated Shaft Spillway " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 51-60,
Volume-12,Issue-1
Abstract : This study examines the performance of a morning glory-type spillway equipped with vortex baffles and stepped
conduit. Morning glory-type spillways are one such type of spillway that includes a separate channel that can replace the
ancillary one. This spillway consists of a circular mouth, an orthogonal circular transform, and a horizontal (or nearly
horizontal) pressurized tunnel that eventually transfers water from the dam reservoir to the downstream side. The results
indicate that the pressure changes with the increase in the discharge rate and water height in the spillway with four steps, and
the changes are small at lower discharge rates while very high-pressure changes have been documented for higher discharge
rates. In some of the states, the pressure on the spillway's body is found to be intensely decreased. Based on the research, the
best performance belongs to the morning glory-type spillway with 12 steps and four vortex breakers on the crest, as these
configuration play an essential role in controlling the discharge rate and preventing cavitation. It is worth mentioning that the
vortex breaker's dimensions based on the ratio of the vortex breaker's thickness (T) to the spillway's diameter (d) would not
have an effect of more than 12.5% on the separation of the flow lines. The physical model used in the study is based on the
spillway of the San Luis Dam in California, with modifications in dimensions and scale
Keywords - Morning glory-type spillway, Stepped conduit, Spillover coefficient
Type : Research paper
Published : Volume-12,Issue-1
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-20610
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Published on 2024-06-05 |
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