ESTIMATION OF DEPTH-AVERAGED VELOCITY AND BOUNDARY SHEAR STRESS IN A TRIANGULAR OPEN CHANNEL

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FAGHFOUR MAGHREBI M.; GIVEHCHI M.

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Journal: WATER AND WASTEWATER Year:2010 | Volume:21 | Issue:2 (74) Page(s): 71-80

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Title

ESTIMATION OF DEPTH-AVERAGED VELOCITY AND BOUNDARY SHEAR STRESS IN A TRIANGULAR OPEN CHANNEL

Author(s)

FAGHFOUR MAGHREBI M. | GIVEHCHI M. | Issue Writer Certificate

Keywords

DEPTH-AVERAGED VELOCITYQ3

FRICTION FACTORQ2

SECONDARY FLOW CELLQ3

TRIANGULAR CHANNELQ2

SHEAR STRESSQ3

Abstract

The proposed method by Shiono and Knight (SKM) is able to predict the lateral DEPTH-AVERAGED VELOCITY and SHEAR STRESS distribution in open channels. The SKM is needed to be calibrated. The calibration parameters are FRICTION FACTOR f, lateral eddy viscosity l, and secondary flow G. In practical problems, the assumption of l=0.07 from among these is considered as a standard value for the eddey viscosity. Thus, the accuracy of the depthavergad and the SHEAR STRESS distributions using SKM will be subject to the determination of ¦ and G. In the present paper, we present the SECONDARY FLOW CELL pattern (G) and FRICTION FACTOR distribution (¦) in a straight prismatic TRIANGULAR CHANNEL with a uniform roughness. The trial and error approach is used to define the best pattern of FRICTION FACTOR to produce the most appropriate results. The results of predicted DEPTH-AVERAGED VELOCITY as well as SHEAR STRESS distributions obtained from SKM as compared to measured values indicate that SKM can accurately predict the velocity and SHEAR STRESS distributions if the two coefficients of ¦ and G are chosen based on accurate patterns.

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APA: Copy

FAGHFOUR MAGHREBI, M., & GIVEHCHI, M.. (2010). ESTIMATION OF DEPTH-AVERAGED VELOCITY AND BOUNDARY SHEAR STRESS IN A TRIANGULAR OPEN CHANNEL. WATER AND WASTEWATER, 21(2 (74)), 71-80. SID. https://sid.ir/paper/103382/en

Vancouver: Copy

FAGHFOUR MAGHREBI M., GIVEHCHI M.. ESTIMATION OF DEPTH-AVERAGED VELOCITY AND BOUNDARY SHEAR STRESS IN A TRIANGULAR OPEN CHANNEL. WATER AND WASTEWATER[Internet]. 2010;21(2 (74)):71-80. Available from: https://sid.ir/paper/103382/en

IEEE: Copy

M. FAGHFOUR MAGHREBI, and M. GIVEHCHI, “ESTIMATION OF DEPTH-AVERAGED VELOCITY AND BOUNDARY SHEAR STRESS IN A TRIANGULAR OPEN CHANNEL,” WATER AND WASTEWATER, vol. 21, no. 2 (74), pp. 71–80, 2010, [Online]. Available: https://sid.ir/paper/103382/en

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