EVALUATION OF EFFECTIVE HYDRAULIC PARAMETERS ON HEAD LOSS IN CURVED OPEN CHANNELS

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POORASAF F.; BINA M.

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Paper Information

Journal: THE SCIENTIFIC JOURNAL OF AGRICULTURE (SJA) Year:2005 | Volume:27 | Issue:(Special Issue of Water Science Engineering) Page(s): 57-66

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Title

EVALUATION OF EFFECTIVE HYDRAULIC PARAMETERS ON HEAD LOSS IN CURVED OPEN CHANNELS

Author(s)

POORASAF F. | BINA M. | Issue Writer Certificate

Keywords

CURVED OPEN CHANNELQ4

BENDQ4

HEAD LOSSQ4

NONLINEAR REGRATION MODELQ2

SECONDARY FLOWQ4

Abstract

In characterizing the flow behavior in the curved channels ƒb(head less coefficient) is a significant source of error in HEAD LOSS assessment. This coefficient is a function of several geometric and dynamic parameters and the influence of each non-dimensional parameters on ƒb is not well understood. In this investigation, variables such as rc/b , θ, b/y , Rn and Fn were introduced and evaluated in order to define a suitable functional relationship for the HEAD LOSS in curved channels. This study was conducted for steady-state and subcritical regime occurring in open channels.A general Multi -Variable Nonlinear Model (MVNLM) applied to the functional relation for predicting. ƒb coefficient was introduced. The unknown coefficient in the model was determined using optimization technique in the SPSS statistical analysis software with the experimental data from different sources in the literature. The predictive model gave the best results. The model is capable of determining the. ƒb coefficient and allowing more accurate HEAD LOSS assessment in hydraulic design practices.

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APA: Copy

POORASAF, F., & BINA, M.. (2005). EVALUATION OF EFFECTIVE HYDRAULIC PARAMETERS ON HEAD LOSS IN CURVED OPEN CHANNELS. THE SCIENTIFIC JOURNAL OF AGRICULTURE (SJA), 27((Special Issue of Water Science Engineering)), 57-66. SID. https://sid.ir/paper/24668/en

Vancouver: Copy

POORASAF F., BINA M.. EVALUATION OF EFFECTIVE HYDRAULIC PARAMETERS ON HEAD LOSS IN CURVED OPEN CHANNELS. THE SCIENTIFIC JOURNAL OF AGRICULTURE (SJA)[Internet]. 2005;27((Special Issue of Water Science Engineering)):57-66. Available from: https://sid.ir/paper/24668/en

IEEE: Copy

F. POORASAF, and M. BINA, “EVALUATION OF EFFECTIVE HYDRAULIC PARAMETERS ON HEAD LOSS IN CURVED OPEN CHANNELS,” THE SCIENTIFIC JOURNAL OF AGRICULTURE (SJA), vol. 27, no. (Special Issue of Water Science Engineering), pp. 57–66, 2005, [Online]. Available: https://sid.ir/paper/24668/en

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