HYDRAULIC CHARACTERISTICS OF FLOW IN SIPHON SPILLWAY BASED ON NUMERICAL MODELING

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RAMEZANI M.; KABIRI SAMANI A.R.; BEHFARNIA K.

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Journal Paper

Paper Information

Journal: Sharif Journal of Civil Engineering Year:2020 | Volume:36-2 | Issue:2/2 Page(s): 27-35

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Title

HYDRAULIC CHARACTERISTICS OF FLOW IN SIPHON SPILLWAY BASED ON NUMERICAL MODELING

Author(s)

RAMEZANI M. | KABIRI SAMANI A.R. | BEHFARNIA K. | Issue Writer Certificate

Keywords

Siphon spillway

Fluid-structure interaction

computational fluid dynamics

black-water Flow

Abstract

Spillways are used in dam projects to convey flood flows and prevent destructive damages of downstream hydraulic systems, while the construction of other types of spillways is restricted, or there is a need to pass great values of flood discharge with a limited head. Siphon spillway is a kind of dam spillways employed in a number of dam reservoirs. This spillway is applied while the space for constructing other types of spillways is restricted, or when there is a need to pass great values of ood discharge with a limited head. One of the most important defects of this spillway is a complicated uid-structure interaction due to the establishment of di erent ow regimes inside the spillway. This situation becomes more complicated when the spillway is not connected to the dam, working individually. Despite the importance of the operation of these hydraulic structures, there is a lack of comprehensive research to investigate the hydraulic behavior of these structures and the ow eld around and inside them. In the present study, di erent unsteady ow regimes including sub-atmospheric ow, two-phase ow, and black-water ow and their e ects on the hydraulic characteristics of Siphon spillways were investigated. For this purpose, ANSYS CFX software was applied to simulate the ow eld in such spillways. To validate the obtained ow regimes, via numerical modeling, experimental results of the former studies were used. Results indicated that the pressure fluctuations were mostly greater beneath the inlet and throat of the spillway compared to the other sections.

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APA: Copy

RAMEZANI, M., KABIRI SAMANI, A.R., & BEHFARNIA, K.. (2020). HYDRAULIC CHARACTERISTICS OF FLOW IN SIPHON SPILLWAY BASED ON NUMERICAL MODELING. SHARIF: CIVIL ENINEERING, 36-2(2/2 ), 27-35. SID. https://sid.ir/paper/959466/en

Vancouver: Copy

RAMEZANI M., KABIRI SAMANI A.R., BEHFARNIA K.. HYDRAULIC CHARACTERISTICS OF FLOW IN SIPHON SPILLWAY BASED ON NUMERICAL MODELING. SHARIF: CIVIL ENINEERING[Internet]. 2020;36-2(2/2 ):27-35. Available from: https://sid.ir/paper/959466/en

IEEE: Copy

M. RAMEZANI, A.R. KABIRI SAMANI, and K. BEHFARNIA, “HYDRAULIC CHARACTERISTICS OF FLOW IN SIPHON SPILLWAY BASED ON NUMERICAL MODELING,” SHARIF: CIVIL ENINEERING, vol. 36-2, no. 2/2 , pp. 27–35, 2020, [Online]. Available: https://sid.ir/paper/959466/en

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