FLOW PATTERN AT LATERAL INTAKE USING A SPUR DIKE AND SUBMERGED VANES

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GOHARI S.; AYYOUBZADEH S.A.; GHODSIAN M.; SALEHI NEYSHABOORI S.A.A.

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Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2011 | Volume:11 | Issue:4 Page(s): 1-18

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Title

FLOW PATTERN AT LATERAL INTAKE USING A SPUR DIKE AND SUBMERGED VANES

Author(s)

GOHARI S. | AYYOUBZADEH S.A. | GHODSIAN M. | SALEHI NEYSHABOORI S.A.A. | Issue Writer Certificate

Keywords

FLOW PATTERNQ3

LATERAL INTAKEQ3

SEDIMENT CONTROLQ3

SPUR DIKEQ3

SUBMERGED VANESQ3

Abstract

Flow passing through LATERAL INTAKEs and channel junctions is turbulent. Sediment flow and bed forms are affected by these FLOW PATTERNs and vice versa. In this research, a laboratory study was carried out to explore a possible method for SEDIMENT CONTROL for a set of SUBMERGED VANES and a single SPUR DIKE simultaneously. Since a larger portion of the near-bed flow was diverted, the intake received a relatively large amount of bed load material; thus, appropriate and reliable methods were needed to minimize the amount of diverted sediment materials into the intake channel. The submerged vane creates a tip vortex and then the helical flow downstream reduces movement of bed sediment into the diversion. In this study, the optimum dimension, number and array of vanes were selected as determined by the regular design method. To guide flow into the diversion and increase vane performance, a single SPUR DIKE was utilized at the opposite side of the intake channel. The location, length and angle of the SPUR DIKE were optimized using the results of previous testing. The FLOW PATTERNs for three diversion ratios (13%, 18%, and 24%) and a 25 cm SPUR DIKE positioned 80 cm from the intake at a 45o angle. The flow depth was measured using a point gauge and three dimensional velocities (u, v, w) at five levels above the bed as measured by ADV. After the sediment flow reached equilibrium, the channel bed was fixed. The length of separation at the intake channel was decreased by increasing the diversion ratio. By setting a SPUR DIKE opposite to the intake channel, the width of the separation line decreased at the channel bottom and increased at the surface, decreasing the amount of sediment ingestion in the intake channel.

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APA: Copy

GOHARI, S., AYYOUBZADEH, S.A., GHODSIAN, M., & SALEHI NEYSHABOORI, S.A.A.. (2011). FLOW PATTERN AT LATERAL INTAKE USING A SPUR DIKE AND SUBMERGED VANES. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 11(4), 1-18. SID. https://sid.ir/paper/28018/en

Vancouver: Copy

GOHARI S., AYYOUBZADEH S.A., GHODSIAN M., SALEHI NEYSHABOORI S.A.A.. FLOW PATTERN AT LATERAL INTAKE USING A SPUR DIKE AND SUBMERGED VANES. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2011;11(4):1-18. Available from: https://sid.ir/paper/28018/en

IEEE: Copy

S. GOHARI, S.A. AYYOUBZADEH, M. GHODSIAN, and S.A.A. SALEHI NEYSHABOORI, “FLOW PATTERN AT LATERAL INTAKE USING A SPUR DIKE AND SUBMERGED VANES,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 11, no. 4, pp. 1–18, 2011, [Online]. Available: https://sid.ir/paper/28018/en

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