INVESTIGATING THE EFFECT OF INTERNAL WEIR’S SCALE ON HYDRAULIC PARAMETERS OF MODERN HORSESHOE SPILLWAY (TECHNICAL NOTE)

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HASANZADEH VAYGHAN V.; MOHAMMADI M.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2018 | Volume:14 | Issue:2 Page(s): 274-280

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Title

INVESTIGATING THE EFFECT OF INTERNAL WEIR’S SCALE ON HYDRAULIC PARAMETERS OF MODERN HORSESHOE SPILLWAY (TECHNICAL NOTE)

Author(s)

HASANZADEH VAYGHAN V. | MOHAMMADI M. | Issue Writer Certificate

Keywords

MODERN AND CLASSIC HORSESHOE SPILLWAYQ1

SCALE OF INTERNAL WEIRQ1

DISCHARGE COEFFICIENTQ1

INTERNAL WEIRQ1

Abstract

Modern horseshoe spillways are combinations of external and INTERNAL WEIRs. In this study, by constructing a physical model of a modern horseshoe spillway including three different INTERNAL WEIR scales, some hydraulic parameters of these spillways; like DISCHARGE COEFFICIENT of the INTERNAL WEIR (CO) and discharge rate through the INTERNAL WEIRs, were investigated. Accordingly the effect of changing INTERNAL WEIR’s scale on the CO was examined in the research. The results showed that by increasing the INTERNAL WEIR’s scale from 1: 10 to 1: 5 and 1: 2.5, the head above the modern horseshoe spillway at the same total discharge, respectively declined to 44, 48 and 56% compared to the head in rectangular weir with the same width. Also by increasing the INTERNAL WEIR/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank"> SCALE OF INTERNAL WEIR, the ratio of the discharge to external weir discharge (Q1/Q2) decreased while the CO increased. To investigate the effect of varying INTERNAL WEIR’s area on CO, the ratio of the area to multiply of weirs length (A0/L0×Lw) was used and it was found that in the spillway with scale of 1: 2.5, the CO increased by increasing the ratio of A0/L0×Lw. Based on the results it can be claimed that the modern horseshoe spillways with INTERNAL WEIR with scales of 1: 2.5 has the best hydraulic performance.

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APA: Copy

HASANZADEH VAYGHAN, V., & MOHAMMADI, M.. (2018). INVESTIGATING THE EFFECT OF INTERNAL WEIR’S SCALE ON HYDRAULIC PARAMETERS OF MODERN HORSESHOE SPILLWAY (TECHNICAL NOTE). IRAN-WATER RESOURCES RESEARCH, 14(2 ), 274-280. SID. https://sid.ir/paper/100351/en

Vancouver: Copy

HASANZADEH VAYGHAN V., MOHAMMADI M.. INVESTIGATING THE EFFECT OF INTERNAL WEIR’S SCALE ON HYDRAULIC PARAMETERS OF MODERN HORSESHOE SPILLWAY (TECHNICAL NOTE). IRAN-WATER RESOURCES RESEARCH[Internet]. 2018;14(2 ):274-280. Available from: https://sid.ir/paper/100351/en

IEEE: Copy

V. HASANZADEH VAYGHAN, and M. MOHAMMADI, “INVESTIGATING THE EFFECT OF INTERNAL WEIR’S SCALE ON HYDRAULIC PARAMETERS OF MODERN HORSESHOE SPILLWAY (TECHNICAL NOTE),” IRAN-WATER RESOURCES RESEARCH, vol. 14, no. 2 , pp. 274–280, 2018, [Online]. Available: https://sid.ir/paper/100351/en

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